Home / 103,613.64-142,987.04-61,174.90

Finding the Fourth Proportional to 103,613.64, 142,987.04 and 61,174.90

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Solution

The fourth proportional to 103,613.64, 142,987.04 and 61,174.90 is: 84,421.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613.64 : 142,987.04 = 61,174.90 : x
  2. Step 2: Convert to fraction form
    103,613.64/142,987.04 = 61,174.90/x
  3. Step 3: Cross multiply
    103,613.64x = 142,987.04 × 61,174.90
  4. Step 4: Simplify right side
    103,613.64x = 8,747,217,873.30
  5. Step 5: Solve for x
    x = 8,747,217,873.30/103,613.64
  6. Step 6: Final answer
    x = 84,421.49

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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.