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Finding the Fourth Proportional to 99,503.97, 149,255.62 and 40,339.50

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Solution

The fourth proportional to 99,503.97, 149,255.62 and 40,339.50 is: 60,509.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,503.97 : 149,255.62 = 40,339.50 : x
  2. Step 2: Convert to fraction form
    99,503.97/149,255.62 = 40,339.50/x
  3. Step 3: Cross multiply
    99,503.97x = 149,255.62 × 40,339.50
  4. Step 4: Simplify right side
    99,503.97x = 6,020,896,982.14
  5. Step 5: Solve for x
    x = 6,020,896,982.14/99,503.97
  6. Step 6: Final answer
    x = 60,509.11

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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.