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Finding the Fourth Proportional to 98,988.80, 148,051.20 and 88,534.40

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Solution

The fourth proportional to 98,988.80, 148,051.20 and 88,534.40 is: 132,415.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,988.80 : 148,051.20 = 88,534.40 : x
  2. Step 2: Convert to fraction form
    98,988.80/148,051.20 = 88,534.40/x
  3. Step 3: Cross multiply
    98,988.80x = 148,051.20 × 88,534.40
  4. Step 4: Simplify right side
    98,988.80x = 13,107,624,161.28
  5. Step 5: Solve for x
    x = 13,107,624,161.28/98,988.80
  6. Step 6: Final answer
    x = 132,415.22

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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.