Home / 120,432.27-180,549.72-45,509.79

Finding the Fourth Proportional to 120,432.27, 180,549.72 and 45,509.79

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Solution

The fourth proportional to 120,432.27, 180,549.72 and 45,509.79 is: 68,227.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,432.27 : 180,549.72 = 45,509.79 : x
  2. Step 2: Convert to fraction form
    120,432.27/180,549.72 = 45,509.79/x
  3. Step 3: Cross multiply
    120,432.27x = 180,549.72 × 45,509.79
  4. Step 4: Simplify right side
    120,432.27x = 8,216,779,841.76
  5. Step 5: Solve for x
    x = 8,216,779,841.76/120,432.27
  6. Step 6: Final answer
    x = 68,227.39

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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.