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Finding the Fourth Proportional to 115,000.97, 158,701.34 and 64,012.61

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Solution

The fourth proportional to 115,000.97, 158,701.34 and 64,012.61 is: 88,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,000.97 : 158,701.34 = 64,012.61 : x
  2. Step 2: Convert to fraction form
    115,000.97/158,701.34 = 64,012.61/x
  3. Step 3: Cross multiply
    115,000.97x = 158,701.34 × 64,012.61
  4. Step 4: Simplify right side
    115,000.97x = 10,158,885,870.33
  5. Step 5: Solve for x
    x = 10,158,885,870.33/115,000.97
  6. Step 6: Final answer
    x = 88,337.40

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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.