Home / 105,431.12-157,971.18-74,200.76

Finding the Fourth Proportional to 105,431.12, 157,971.18 and 74,200.76

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Solution

The fourth proportional to 105,431.12, 157,971.18 and 74,200.76 is: 111,177.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,431.12 : 157,971.18 = 74,200.76 : x
  2. Step 2: Convert to fraction form
    105,431.12/157,971.18 = 74,200.76/x
  3. Step 3: Cross multiply
    105,431.12x = 157,971.18 × 74,200.76
  4. Step 4: Simplify right side
    105,431.12x = 11,721,581,614.10
  5. Step 5: Solve for x
    x = 11,721,581,614.10/105,431.12
  6. Step 6: Final answer
    x = 111,177.63

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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.