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Finding the Fourth Proportional to 99,999.61, 149,999.55 and 40,835.28

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Solution

The fourth proportional to 99,999.61, 149,999.55 and 40,835.28 is: 61,252.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,999.61 : 149,999.55 = 40,835.28 : x
  2. Step 2: Convert to fraction form
    99,999.61/149,999.55 = 40,835.28/x
  3. Step 3: Cross multiply
    99,999.61x = 149,999.55 × 40,835.28
  4. Step 4: Simplify right side
    99,999.61x = 6,125,273,214.76
  5. Step 5: Solve for x
    x = 6,125,273,214.76/99,999.61
  6. Step 6: Final answer
    x = 61,252.97

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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.