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Finding the Fourth Proportional to 99,501.03, 137,402.64 and 63,214.20

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Solution

The fourth proportional to 99,501.03, 137,402.64 and 63,214.20 is: 87,293.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,501.03 : 137,402.64 = 63,214.20 : x
  2. Step 2: Convert to fraction form
    99,501.03/137,402.64 = 63,214.20/x
  3. Step 3: Cross multiply
    99,501.03x = 137,402.64 × 63,214.20
  4. Step 4: Simplify right side
    99,501.03x = 8,685,797,965.49
  5. Step 5: Solve for x
    x = 8,685,797,965.49/99,501.03
  6. Step 6: Final answer
    x = 87,293.55

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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.