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Finding the Fourth Proportional to 138,399, 207,613.08 and 63,506.40

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Solution

The fourth proportional to 138,399, 207,613.08 and 63,506.40 is: 95,266.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,399 : 207,613.08 = 63,506.40 : x
  2. Step 2: Convert to fraction form
    138,399/207,613.08 = 63,506.40/x
  3. Step 3: Cross multiply
    138,399x = 207,613.08 × 63,506.40
  4. Step 4: Simplify right side
    138,399x = 13,184,759,303.71
  5. Step 5: Solve for x
    x = 13,184,759,303.71/138,399
  6. Step 6: Final answer
    x = 95,266.29

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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.