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Finding the Fourth Proportional to 153,248.55, 211,479.69 and 88,720.52

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Solution

The fourth proportional to 153,248.55, 211,479.69 and 88,720.52 is: 122,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,248.55 : 211,479.69 = 88,720.52 : x
  2. Step 2: Convert to fraction form
    153,248.55/211,479.69 = 88,720.52/x
  3. Step 3: Cross multiply
    153,248.55x = 211,479.69 × 88,720.52
  4. Step 4: Simplify right side
    153,248.55x = 18,762,587,622.64
  5. Step 5: Solve for x
    x = 18,762,587,622.64/153,248.55
  6. Step 6: Final answer
    x = 122,432.40

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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.