Home / 187,472,061.12-258,655,481.64-121,287,754.92

Finding the Fourth Proportional to 187,472,061.12, 258,655,481.64 and 121,287,754.92

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Solution

The fourth proportional to 187,472,061.12, 258,655,481.64 and 121,287,754.92 is: 167,340,895.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,472,061.12 : 258,655,481.64 = 121,287,754.92 : x
  2. Step 2: Convert to fraction form
    187,472,061.12/258,655,481.64 = 121,287,754.92/x
  3. Step 3: Cross multiply
    187,472,061.12x = 258,655,481.64 × 121,287,754.92
  4. Step 4: Simplify right side
    187,472,061.12x = 31,371,742,665,866,880
  5. Step 5: Solve for x
    x = 31,371,742,665,866,880/187,472,061.12
  6. Step 6: Final answer
    x = 167,340,895.91

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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.