Home / 145,044.91-200,165.45-81,387.42

Finding the Fourth Proportional to 145,044.91, 200,165.45 and 81,387.42

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Solution

The fourth proportional to 145,044.91, 200,165.45 and 81,387.42 is: 112,316.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,044.91 : 200,165.45 = 81,387.42 : x
  2. Step 2: Convert to fraction form
    145,044.91/200,165.45 = 81,387.42/x
  3. Step 3: Cross multiply
    145,044.91x = 200,165.45 × 81,387.42
  4. Step 4: Simplify right side
    145,044.91x = 16,290,948,391.08
  5. Step 5: Solve for x
    x = 16,290,948,391.08/145,044.91
  6. Step 6: Final answer
    x = 112,316.58

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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.