Home / 99,567.60-149,351.40-88,681.20

Finding the Fourth Proportional to 99,567.60, 149,351.40 and 88,681.20

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Solution

The fourth proportional to 99,567.60, 149,351.40 and 88,681.20 is: 133,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,567.60 : 149,351.40 = 88,681.20 : x
  2. Step 2: Convert to fraction form
    99,567.60/149,351.40 = 88,681.20/x
  3. Step 3: Cross multiply
    99,567.60x = 149,351.40 × 88,681.20
  4. Step 4: Simplify right side
    99,567.60x = 13,244,661,373.68
  5. Step 5: Solve for x
    x = 13,244,661,373.68/99,567.60
  6. Step 6: Final answer
    x = 133,021.80

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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.