Home / 125,127.68-172,680.96-71,421.44

Finding the Fourth Proportional to 125,127.68, 172,680.96 and 71,421.44

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Solution

The fourth proportional to 125,127.68, 172,680.96 and 71,421.44 is: 98,564.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,127.68 : 172,680.96 = 71,421.44 : x
  2. Step 2: Convert to fraction form
    125,127.68/172,680.96 = 71,421.44/x
  3. Step 3: Cross multiply
    125,127.68x = 172,680.96 × 71,421.44
  4. Step 4: Simplify right side
    125,127.68x = 12,333,122,823.78
  5. Step 5: Solve for x
    x = 12,333,122,823.78/125,127.68
  6. Step 6: Final answer
    x = 98,564.31

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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.