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Finding the Fourth Proportional to 99,252, 137,031.12 and 69,026.40

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Solution

The fourth proportional to 99,252, 137,031.12 and 69,026.40 is: 95,300.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,252 : 137,031.12 = 69,026.40 : x
  2. Step 2: Convert to fraction form
    99,252/137,031.12 = 69,026.40/x
  3. Step 3: Cross multiply
    99,252x = 137,031.12 × 69,026.40
  4. Step 4: Simplify right side
    99,252x = 9,458,764,901.57
  5. Step 5: Solve for x
    x = 9,458,764,901.57/99,252
  6. Step 6: Final answer
    x = 95,300.50

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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.