Home / 208,395.29-287,569.61-126,712.20

Finding the Fourth Proportional to 208,395.29, 287,569.61 and 126,712.20

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Solution

The fourth proportional to 208,395.29, 287,569.61 and 126,712.20 is: 174,853.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,395.29 : 287,569.61 = 126,712.20 : x
  2. Step 2: Convert to fraction form
    208,395.29/287,569.61 = 126,712.20/x
  3. Step 3: Cross multiply
    208,395.29x = 287,569.61 × 126,712.20
  4. Step 4: Simplify right side
    208,395.29x = 36,438,578,253.02
  5. Step 5: Solve for x
    x = 36,438,578,253.02/208,395.29
  6. Step 6: Final answer
    x = 174,853.17

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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.