Home / 112,642.02-155,280.33-85,737.66

Finding the Fourth Proportional to 112,642.02, 155,280.33 and 85,737.66

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Solution

The fourth proportional to 112,642.02, 155,280.33 and 85,737.66 is: 118,191.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,642.02 : 155,280.33 = 85,737.66 : x
  2. Step 2: Convert to fraction form
    112,642.02/155,280.33 = 85,737.66/x
  3. Step 3: Cross multiply
    112,642.02x = 155,280.33 × 85,737.66
  4. Step 4: Simplify right side
    112,642.02x = 13,313,372,138.23
  5. Step 5: Solve for x
    x = 13,313,372,138.23/112,642.02
  6. Step 6: Final answer
    x = 118,191.88

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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.