Home / 149,997.18-207,008.87-85,486.15

Finding the Fourth Proportional to 149,997.18, 207,008.87 and 85,486.15

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Solution

The fourth proportional to 149,997.18, 207,008.87 and 85,486.15 is: 117,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,997.18 : 207,008.87 = 85,486.15 : x
  2. Step 2: Convert to fraction form
    149,997.18/207,008.87 = 85,486.15/x
  3. Step 3: Cross multiply
    149,997.18x = 207,008.87 × 85,486.15
  4. Step 4: Simplify right side
    149,997.18x = 17,696,391,143.48
  5. Step 5: Solve for x
    x = 17,696,391,143.48/149,997.18
  6. Step 6: Final answer
    x = 117,978.16

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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.