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Finding the Fourth Proportional to 150,005.78, 225,070.80 and 65,722.40

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Solution

The fourth proportional to 150,005.78, 225,070.80 and 65,722.40 is: 98,610.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,005.78 : 225,070.80 = 65,722.40 : x
  2. Step 2: Convert to fraction form
    150,005.78/225,070.80 = 65,722.40/x
  3. Step 3: Cross multiply
    150,005.78x = 225,070.80 × 65,722.40
  4. Step 4: Simplify right side
    150,005.78x = 14,792,193,145.92
  5. Step 5: Solve for x
    x = 14,792,193,145.92/150,005.78
  6. Step 6: Final answer
    x = 98,610.82

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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.