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Finding the Fourth Proportional to 87,613.40, 122,969.80 and 87,613.40

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Solution

The fourth proportional to 87,613.40, 122,969.80 and 87,613.40 is: 122,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,613.40 : 122,969.80 = 87,613.40 : x
  2. Step 2: Convert to fraction form
    87,613.40/122,969.80 = 87,613.40/x
  3. Step 3: Cross multiply
    87,613.40x = 122,969.80 × 87,613.40
  4. Step 4: Simplify right side
    87,613.40x = 10,773,802,275.32
  5. Step 5: Solve for x
    x = 10,773,802,275.32/87,613.40
  6. Step 6: Final answer
    x = 122,969.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.