Home / 261,979.18-361,531.28-142,747.18

Finding the Fourth Proportional to 261,979.18, 361,531.28 and 142,747.18

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Solution

The fourth proportional to 261,979.18, 361,531.28 and 142,747.18 is: 196,991.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,979.18 : 361,531.28 = 142,747.18 : x
  2. Step 2: Convert to fraction form
    261,979.18/361,531.28 = 142,747.18/x
  3. Step 3: Cross multiply
    261,979.18x = 361,531.28 × 142,747.18
  4. Step 4: Simplify right side
    261,979.18x = 51,607,569,988.05
  5. Step 5: Solve for x
    x = 51,607,569,988.05/261,979.18
  6. Step 6: Final answer
    x = 196,991.11

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1.5x scale

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.