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Finding the Fourth Proportional to 99,382.40, 148,987.20 and 59,897.60

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Solution

The fourth proportional to 99,382.40, 148,987.20 and 59,897.60 is: 89,794.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,382.40 : 148,987.20 = 59,897.60 : x
  2. Step 2: Convert to fraction form
    99,382.40/148,987.20 = 59,897.60/x
  3. Step 3: Cross multiply
    99,382.40x = 148,987.20 × 59,897.60
  4. Step 4: Simplify right side
    99,382.40x = 8,923,975,710.72
  5. Step 5: Solve for x
    x = 8,923,975,710.72/99,382.40
  6. Step 6: Final answer
    x = 89,794.33

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1.5x scale

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.