Home / 156,634.74-216,156.09-85,014.78

Finding the Fourth Proportional to 156,634.74, 216,156.09 and 85,014.78

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Solution

The fourth proportional to 156,634.74, 216,156.09 and 85,014.78 is: 117,320.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,634.74 : 216,156.09 = 85,014.78 : x
  2. Step 2: Convert to fraction form
    156,634.74/216,156.09 = 85,014.78/x
  3. Step 3: Cross multiply
    156,634.74x = 216,156.09 × 85,014.78
  4. Step 4: Simplify right side
    156,634.74x = 18,376,462,437.01
  5. Step 5: Solve for x
    x = 18,376,462,437.01/156,634.74
  6. Step 6: Final answer
    x = 117,320.48

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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.