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Finding the Fourth Proportional to 98,281.48, 146,707.13 and 85,839.88

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Solution

The fourth proportional to 98,281.48, 146,707.13 and 85,839.88 is: 128,135.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,281.48 : 146,707.13 = 85,839.88 : x
  2. Step 2: Convert to fraction form
    98,281.48/146,707.13 = 85,839.88/x
  3. Step 3: Cross multiply
    98,281.48x = 146,707.13 × 85,839.88
  4. Step 4: Simplify right side
    98,281.48x = 12,593,322,434.34
  5. Step 5: Solve for x
    x = 12,593,322,434.34/98,281.48
  6. Step 6: Final answer
    x = 128,135.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.