Home / 249,171.09-343,834.02-138,781.31

Finding the Fourth Proportional to 249,171.09, 343,834.02 and 138,781.31

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Solution

The fourth proportional to 249,171.09, 343,834.02 and 138,781.31 is: 191,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,171.09 : 343,834.02 = 138,781.31 : x
  2. Step 2: Convert to fraction form
    249,171.09/343,834.02 = 138,781.31/x
  3. Step 3: Cross multiply
    249,171.09x = 343,834.02 × 138,781.31
  4. Step 4: Simplify right side
    249,171.09x = 47,717,735,718.17
  5. Step 5: Solve for x
    x = 47,717,735,718.17/249,171.09
  6. Step 6: Final answer
    x = 191,505.91

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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.