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Finding the Fourth Proportional to 108,746.34, 150,011.95 and 63,407.78

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Solution

The fourth proportional to 108,746.34, 150,011.95 and 63,407.78 is: 87,468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,746.34 : 150,011.95 = 63,407.78 : x
  2. Step 2: Convert to fraction form
    108,746.34/150,011.95 = 63,407.78/x
  3. Step 3: Cross multiply
    108,746.34x = 150,011.95 × 63,407.78
  4. Step 4: Simplify right side
    108,746.34x = 9,511,924,722.97
  5. Step 5: Solve for x
    x = 9,511,924,722.97/108,746.34
  6. Step 6: Final answer
    x = 87,468.92

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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.