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Finding the Fourth Proportional to 134,140.80, 201,211.20 and 45,397.20

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Solution

The fourth proportional to 134,140.80, 201,211.20 and 45,397.20 is: 68,095.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,140.80 : 201,211.20 = 45,397.20 : x
  2. Step 2: Convert to fraction form
    134,140.80/201,211.20 = 45,397.20/x
  3. Step 3: Cross multiply
    134,140.80x = 201,211.20 × 45,397.20
  4. Step 4: Simplify right side
    134,140.80x = 9,134,425,088.64
  5. Step 5: Solve for x
    x = 9,134,425,088.64/134,140.80
  6. Step 6: Final answer
    x = 68,095.80

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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.