Home / 98,436.64-147,680.16-28,321.12

Finding the Fourth Proportional to 98,436.64, 147,680.16 and 28,321.12

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Solution

The fourth proportional to 98,436.64, 147,680.16 and 28,321.12 is: 42,488.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,436.64 : 147,680.16 = 28,321.12 : x
  2. Step 2: Convert to fraction form
    98,436.64/147,680.16 = 28,321.12/x
  3. Step 3: Cross multiply
    98,436.64x = 147,680.16 × 28,321.12
  4. Step 4: Simplify right side
    98,436.64x = 4,182,467,532.98
  5. Step 5: Solve for x
    x = 4,182,467,532.98/98,436.64
  6. Step 6: Final answer
    x = 42,488.93

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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.