Home / 125,121.47-172,665.67-71,405.10

Finding the Fourth Proportional to 125,121.47, 172,665.67 and 71,405.10

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Solution

The fourth proportional to 125,121.47, 172,665.67 and 71,405.10 is: 98,537.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,121.47 : 172,665.67 = 71,405.10 : x
  2. Step 2: Convert to fraction form
    125,121.47/172,665.67 = 71,405.10/x
  3. Step 3: Cross multiply
    125,121.47x = 172,665.67 × 71,405.10
  4. Step 4: Simplify right side
    125,121.47x = 12,329,209,432.92
  5. Step 5: Solve for x
    x = 12,329,209,432.92/125,121.47
  6. Step 6: Final answer
    x = 98,537.92

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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.