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Finding the Fourth Proportional to 99,297.90, 137,031.95 and 53,975.97

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Solution

The fourth proportional to 99,297.90, 137,031.95 and 53,975.97 is: 74,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,297.90 : 137,031.95 = 53,975.97 : x
  2. Step 2: Convert to fraction form
    99,297.90/137,031.95 = 53,975.97/x
  3. Step 3: Cross multiply
    99,297.90x = 137,031.95 × 53,975.97
  4. Step 4: Simplify right side
    99,297.90x = 7,396,432,557.18
  5. Step 5: Solve for x
    x = 7,396,432,557.18/99,297.90
  6. Step 6: Final answer
    x = 74,487.30

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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.