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Finding the Fourth Proportional to 155,658.60, 233,560.80 and 80,863.20

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Solution

The fourth proportional to 155,658.60, 233,560.80 and 80,863.20 is: 121,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,658.60 : 233,560.80 = 80,863.20 : x
  2. Step 2: Convert to fraction form
    155,658.60/233,560.80 = 80,863.20/x
  3. Step 3: Cross multiply
    155,658.60x = 233,560.80 × 80,863.20
  4. Step 4: Simplify right side
    155,658.60x = 18,886,473,682.56
  5. Step 5: Solve for x
    x = 18,886,473,682.56/155,658.60
  6. Step 6: Final answer
    x = 121,332.67

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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.