Home / 98,639.40-147,886.20-54,316.20

Finding the Fourth Proportional to 98,639.40, 147,886.20 and 54,316.20

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Solution

The fourth proportional to 98,639.40, 147,886.20 and 54,316.20 is: 81,434.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,639.40 : 147,886.20 = 54,316.20 : x
  2. Step 2: Convert to fraction form
    98,639.40/147,886.20 = 54,316.20/x
  3. Step 3: Cross multiply
    98,639.40x = 147,886.20 × 54,316.20
  4. Step 4: Simplify right side
    98,639.40x = 8,032,616,416.44
  5. Step 5: Solve for x
    x = 8,032,616,416.44/98,639.40
  6. Step 6: Final answer
    x = 81,434.16

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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.