Home / 98,454.40-147,758.76-68,678.56

Finding the Fourth Proportional to 98,454.40, 147,758.76 and 68,678.56

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Solution

The fourth proportional to 98,454.40, 147,758.76 and 68,678.56 is: 103,071.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,454.40 : 147,758.76 = 68,678.56 : x
  2. Step 2: Convert to fraction form
    98,454.40/147,758.76 = 68,678.56/x
  3. Step 3: Cross multiply
    98,454.40x = 147,758.76 × 68,678.56
  4. Step 4: Simplify right side
    98,454.40x = 10,147,858,864.19
  5. Step 5: Solve for x
    x = 10,147,858,864.19/98,454.40
  6. Step 6: Final answer
    x = 103,071.66

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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.