Home / 138,613.08-207,898.02-45,118.20

Finding the Fourth Proportional to 138,613.08, 207,898.02 and 45,118.20

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Solution

The fourth proportional to 138,613.08, 207,898.02 and 45,118.20 is: 67,670.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,613.08 : 207,898.02 = 45,118.20 : x
  2. Step 2: Convert to fraction form
    138,613.08/207,898.02 = 45,118.20/x
  3. Step 3: Cross multiply
    138,613.08x = 207,898.02 × 45,118.20
  4. Step 4: Simplify right side
    138,613.08x = 9,379,984,445.96
  5. Step 5: Solve for x
    x = 9,379,984,445.96/138,613.08
  6. Step 6: Final answer
    x = 67,670.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.