Home / 138,478.40-207,569.28-98,915.48

Finding the Fourth Proportional to 138,478.40, 207,569.28 and 98,915.48

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Solution

The fourth proportional to 138,478.40, 207,569.28 and 98,915.48 is: 148,267.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,478.40 : 207,569.28 = 98,915.48 : x
  2. Step 2: Convert to fraction form
    138,478.40/207,569.28 = 98,915.48/x
  3. Step 3: Cross multiply
    138,478.40x = 207,569.28 × 98,915.48
  4. Step 4: Simplify right side
    138,478.40x = 20,531,814,964.45
  5. Step 5: Solve for x
    x = 20,531,814,964.45/138,478.40
  6. Step 6: Final answer
    x = 148,267.27

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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.