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Finding the Fourth Proportional to 118,488.70, 163,517.52 and 70,769.58

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Solution

The fourth proportional to 118,488.70, 163,517.52 and 70,769.58 is: 97,663.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,488.70 : 163,517.52 = 70,769.58 : x
  2. Step 2: Convert to fraction form
    118,488.70/163,517.52 = 70,769.58/x
  3. Step 3: Cross multiply
    118,488.70x = 163,517.52 × 70,769.58
  4. Step 4: Simplify right side
    118,488.70x = 11,572,066,213.04
  5. Step 5: Solve for x
    x = 11,572,066,213.04/118,488.70
  6. Step 6: Final answer
    x = 97,663.88

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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.