Home / 143,443,906,818.84-197,952,666,557.04-78,339,225,394.26

Finding the Fourth Proportional to 143,443,906,818.84, 197,952,666,557.04 and 78,339,225,394.26

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Solution

The fourth proportional to 143,443,906,818.84, 197,952,666,557.04 and 78,339,225,394.26 is: 108,108,172,084.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,443,906,818.84 : 197,952,666,557.04 = 78,339,225,394.26 : x
  2. Step 2: Convert to fraction form
    143,443,906,818.84/197,952,666,557.04 = 78,339,225,394.26/x
  3. Step 3: Cross multiply
    143,443,906,818.84x = 197,952,666,557.04 × 78,339,225,394.26
  4. Step 4: Simplify right side
    143,443,906,818.84x = 15,507,458,562,806,750,642,176
  5. Step 5: Solve for x
    x = 15,507,458,562,806,750,642,176/143,443,906,818.84
  6. Step 6: Final answer
    x = 108,108,172,084.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.