Home / 120,156.64-180,247.28-45,339.74

Finding the Fourth Proportional to 120,156.64, 180,247.28 and 45,339.74

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Solution

The fourth proportional to 120,156.64, 180,247.28 and 45,339.74 is: 68,014.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,156.64 : 180,247.28 = 45,339.74 : x
  2. Step 2: Convert to fraction form
    120,156.64/180,247.28 = 45,339.74/x
  3. Step 3: Cross multiply
    120,156.64x = 180,247.28 × 45,339.74
  4. Step 4: Simplify right side
    120,156.64x = 8,172,364,810.91
  5. Step 5: Solve for x
    x = 8,172,364,810.91/120,156.64
  6. Step 6: Final answer
    x = 68,014.26

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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.