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Finding the Fourth Proportional to 100,697.40, 151,162.80 and 54,041.40

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Solution

The fourth proportional to 100,697.40, 151,162.80 and 54,041.40 is: 81,124.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,697.40 : 151,162.80 = 54,041.40 : x
  2. Step 2: Convert to fraction form
    100,697.40/151,162.80 = 54,041.40/x
  3. Step 3: Cross multiply
    100,697.40x = 151,162.80 × 54,041.40
  4. Step 4: Simplify right side
    100,697.40x = 8,169,049,339.92
  5. Step 5: Solve for x
    x = 8,169,049,339.92/100,697.40
  6. Step 6: Final answer
    x = 81,124.73

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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.