Home / 125,153.91-172,686.51-71,456.40

Finding the Fourth Proportional to 125,153.91, 172,686.51 and 71,456.40

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Solution

The fourth proportional to 125,153.91, 172,686.51 and 71,456.40 is: 98,595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,153.91 : 172,686.51 = 71,456.40 : x
  2. Step 2: Convert to fraction form
    125,153.91/172,686.51 = 71,456.40/x
  3. Step 3: Cross multiply
    125,153.91x = 172,686.51 × 71,456.40
  4. Step 4: Simplify right side
    125,153.91x = 12,339,556,333.16
  5. Step 5: Solve for x
    x = 12,339,556,333.16/125,153.91
  6. Step 6: Final answer
    x = 98,595.05

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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.