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Finding the Fourth Proportional to 119,931.50, 165,520.05 and 69,630.50

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Solution

The fourth proportional to 119,931.50, 165,520.05 and 69,630.50 is: 96,098.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,931.50 : 165,520.05 = 69,630.50 : x
  2. Step 2: Convert to fraction form
    119,931.50/165,520.05 = 69,630.50/x
  3. Step 3: Cross multiply
    119,931.50x = 165,520.05 × 69,630.50
  4. Step 4: Simplify right side
    119,931.50x = 11,525,243,841.53
  5. Step 5: Solve for x
    x = 11,525,243,841.53/119,931.50
  6. Step 6: Final answer
    x = 96,098.55

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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.