Home / 143,881,517,614.54-198,548,628,045.87-78,763,347,725.22

Finding the Fourth Proportional to 143,881,517,614.54, 198,548,628,045.87 and 78,763,347,725.22

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Solution

The fourth proportional to 143,881,517,614.54, 198,548,628,045.87 and 78,763,347,725.22 is: 108,689,113,726.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,881,517,614.54 : 198,548,628,045.87 = 78,763,347,725.22 : x
  2. Step 2: Convert to fraction form
    143,881,517,614.54/198,548,628,045.87 = 78,763,347,725.22/x
  3. Step 3: Cross multiply
    143,881,517,614.54x = 198,548,628,045.87 × 78,763,347,725.22
  4. Step 4: Simplify right side
    143,881,517,614.54x = 15,638,354,631,142,225,739,776
  5. Step 5: Solve for x
    x = 15,638,354,631,142,225,739,776/143,881,517,614.54
  6. Step 6: Final answer
    x = 108,689,113,726.46

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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.