Home / 156,729.86-216,281.04-85,108.04

Finding the Fourth Proportional to 156,729.86, 216,281.04 and 85,108.04

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Solution

The fourth proportional to 156,729.86, 216,281.04 and 85,108.04 is: 117,445.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,729.86 : 216,281.04 = 85,108.04 : x
  2. Step 2: Convert to fraction form
    156,729.86/216,281.04 = 85,108.04/x
  3. Step 3: Cross multiply
    156,729.86x = 216,281.04 × 85,108.04
  4. Step 4: Simplify right side
    156,729.86x = 18,407,255,403.56
  5. Step 5: Solve for x
    x = 18,407,255,403.56/156,729.86
  6. Step 6: Final answer
    x = 117,445.75

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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.