Home / 145,538.06-217,902.19-74,306.87

Finding the Fourth Proportional to 145,538.06, 217,902.19 and 74,306.87

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Solution

The fourth proportional to 145,538.06, 217,902.19 and 74,306.87 is: 111,253.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,538.06 : 217,902.19 = 74,306.87 : x
  2. Step 2: Convert to fraction form
    145,538.06/217,902.19 = 74,306.87/x
  3. Step 3: Cross multiply
    145,538.06x = 217,902.19 × 74,306.87
  4. Step 4: Simplify right side
    145,538.06x = 16,191,628,615.53
  5. Step 5: Solve for x
    x = 16,191,628,615.53/145,538.06
  6. Step 6: Final answer
    x = 111,253.57

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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.