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Finding the Fourth Proportional to 153,387, 211,672.06 and 88,865.04

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Solution

The fourth proportional to 153,387, 211,672.06 and 88,865.04 is: 122,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,387 : 211,672.06 = 88,865.04 : x
  2. Step 2: Convert to fraction form
    153,387/211,672.06 = 88,865.04/x
  3. Step 3: Cross multiply
    153,387x = 211,672.06 × 88,865.04
  4. Step 4: Simplify right side
    153,387x = 18,810,246,078.78
  5. Step 5: Solve for x
    x = 18,810,246,078.78/153,387
  6. Step 6: Final answer
    x = 122,632.60

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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.