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Finding the Fourth Proportional to 99,884.80, 149,827.20 and 40,688.20

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Solution

The fourth proportional to 99,884.80, 149,827.20 and 40,688.20 is: 61,032.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,884.80 : 149,827.20 = 40,688.20 : x
  2. Step 2: Convert to fraction form
    99,884.80/149,827.20 = 40,688.20/x
  3. Step 3: Cross multiply
    99,884.80x = 149,827.20 × 40,688.20
  4. Step 4: Simplify right side
    99,884.80x = 6,096,199,079.04
  5. Step 5: Solve for x
    x = 6,096,199,079.04/99,884.80
  6. Step 6: Final answer
    x = 61,032.30

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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.