Home / 156,731.80-216,289.20-85,111.24

Finding the Fourth Proportional to 156,731.80, 216,289.20 and 85,111.24

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Solution

The fourth proportional to 156,731.80, 216,289.20 and 85,111.24 is: 117,453.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,731.80 : 216,289.20 = 85,111.24 : x
  2. Step 2: Convert to fraction form
    156,731.80/216,289.20 = 85,111.24/x
  3. Step 3: Cross multiply
    156,731.80x = 216,289.20 × 85,111.24
  4. Step 4: Simplify right side
    156,731.80x = 18,408,642,010.61
  5. Step 5: Solve for x
    x = 18,408,642,010.61/156,731.80
  6. Step 6: Final answer
    x = 117,453.14

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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.