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Finding the Fourth Proportional to 108,031.80, 149,023.98 and 63,311.16

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Solution

The fourth proportional to 108,031.80, 149,023.98 and 63,311.16 is: 87,334.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,031.80 : 149,023.98 = 63,311.16 : x
  2. Step 2: Convert to fraction form
    108,031.80/149,023.98 = 63,311.16/x
  3. Step 3: Cross multiply
    108,031.80x = 149,023.98 × 63,311.16
  4. Step 4: Simplify right side
    108,031.80x = 9,434,881,041.62
  5. Step 5: Solve for x
    x = 9,434,881,041.62/108,031.80
  6. Step 6: Final answer
    x = 87,334.29

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1.5x scale

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.