Home / 121,240.10-181,860.15-74,000.90

Finding the Fourth Proportional to 121,240.10, 181,860.15 and 74,000.90

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Solution

The fourth proportional to 121,240.10, 181,860.15 and 74,000.90 is: 111,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,240.10 : 181,860.15 = 74,000.90 : x
  2. Step 2: Convert to fraction form
    121,240.10/181,860.15 = 74,000.90/x
  3. Step 3: Cross multiply
    121,240.10x = 181,860.15 × 74,000.90
  4. Step 4: Simplify right side
    121,240.10x = 13,457,814,774.14
  5. Step 5: Solve for x
    x = 13,457,814,774.14/121,240.10
  6. Step 6: Final answer
    x = 111,001.35

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Similar ratio
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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.