Home / 172,387.13-237,821.15-105,280.25

Finding the Fourth Proportional to 172,387.13, 237,821.15 and 105,280.25

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Solution

The fourth proportional to 172,387.13, 237,821.15 and 105,280.25 is: 145,242.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,387.13 : 237,821.15 = 105,280.25 : x
  2. Step 2: Convert to fraction form
    172,387.13/237,821.15 = 105,280.25/x
  3. Step 3: Cross multiply
    172,387.13x = 237,821.15 × 105,280.25
  4. Step 4: Simplify right side
    172,387.13x = 25,037,869,600.89
  5. Step 5: Solve for x
    x = 25,037,869,600.89/172,387.13
  6. Step 6: Final answer
    x = 145,242.10

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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.