Home / 100,832.10-151,248.15-85,280.10

Finding the Fourth Proportional to 100,832.10, 151,248.15 and 85,280.10

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Solution

The fourth proportional to 100,832.10, 151,248.15 and 85,280.10 is: 127,920.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,832.10 : 151,248.15 = 85,280.10 : x
  2. Step 2: Convert to fraction form
    100,832.10/151,248.15 = 85,280.10/x
  3. Step 3: Cross multiply
    100,832.10x = 151,248.15 × 85,280.10
  4. Step 4: Simplify right side
    100,832.10x = 12,898,457,356.82
  5. Step 5: Solve for x
    x = 12,898,457,356.82/100,832.10
  6. Step 6: Final answer
    x = 127,920.15

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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.