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Finding the Fourth Proportional to 108,740.70, 163,062.45 and 42,158.70

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Solution

The fourth proportional to 108,740.70, 163,062.45 and 42,158.70 is: 63,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,740.70 : 163,062.45 = 42,158.70 : x
  2. Step 2: Convert to fraction form
    108,740.70/163,062.45 = 42,158.70/x
  3. Step 3: Cross multiply
    108,740.70x = 163,062.45 × 42,158.70
  4. Step 4: Simplify right side
    108,740.70x = 6,874,500,910.82
  5. Step 5: Solve for x
    x = 6,874,500,910.82/108,740.70
  6. Step 6: Final answer
    x = 63,219.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.