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Finding the Fourth Proportional to 98,939.84, 136,554.52 and 75,026.20

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Solution

The fourth proportional to 98,939.84, 136,554.52 and 75,026.20 is: 103,549.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,939.84 : 136,554.52 = 75,026.20 : x
  2. Step 2: Convert to fraction form
    98,939.84/136,554.52 = 75,026.20/x
  3. Step 3: Cross multiply
    98,939.84x = 136,554.52 × 75,026.20
  4. Step 4: Simplify right side
    98,939.84x = 10,245,166,728.42
  5. Step 5: Solve for x
    x = 10,245,166,728.42/98,939.84
  6. Step 6: Final answer
    x = 103,549.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.