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Finding the Fourth Proportional to 99,521.80, 149,364.30 and 98,744.20

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Solution

The fourth proportional to 99,521.80, 149,364.30 and 98,744.20 is: 148,197.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,521.80 : 149,364.30 = 98,744.20 : x
  2. Step 2: Convert to fraction form
    99,521.80/149,364.30 = 98,744.20/x
  3. Step 3: Cross multiply
    99,521.80x = 149,364.30 × 98,744.20
  4. Step 4: Simplify right side
    99,521.80x = 14,748,858,312.06
  5. Step 5: Solve for x
    x = 14,748,858,312.06/99,521.80
  6. Step 6: Final answer
    x = 148,197.26

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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.