Home / 131,107,030.80-180,927,673.56-72,369,680.64

Finding the Fourth Proportional to 131,107,030.80, 180,927,673.56 and 72,369,680.64

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Solution

The fourth proportional to 131,107,030.80, 180,927,673.56 and 72,369,680.64 is: 99,870,143.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,107,030.80 : 180,927,673.56 = 72,369,680.64 : x
  2. Step 2: Convert to fraction form
    131,107,030.80/180,927,673.56 = 72,369,680.64/x
  3. Step 3: Cross multiply
    131,107,030.80x = 180,927,673.56 × 72,369,680.64
  4. Step 4: Simplify right side
    131,107,030.80x = 13,093,677,954,475,372
  5. Step 5: Solve for x
    x = 13,093,677,954,475,372/131,107,030.80
  6. Step 6: Final answer
    x = 99,870,143.31

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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.