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Finding the Fourth Proportional to 158,379.12, 218,503.04 and 97,930.40

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Solution

The fourth proportional to 158,379.12, 218,503.04 and 97,930.40 is: 135,106.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,379.12 : 218,503.04 = 97,930.40 : x
  2. Step 2: Convert to fraction form
    158,379.12/218,503.04 = 97,930.40/x
  3. Step 3: Cross multiply
    158,379.12x = 218,503.04 × 97,930.40
  4. Step 4: Simplify right side
    158,379.12x = 21,398,090,108.42
  5. Step 5: Solve for x
    x = 21,398,090,108.42/158,379.12
  6. Step 6: Final answer
    x = 135,106.76

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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.