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Finding the Fourth Proportional to 103,507.65, 155,206.80 and 44,276.40

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Solution

The fourth proportional to 103,507.65, 155,206.80 and 44,276.40 is: 66,391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,507.65 : 155,206.80 = 44,276.40 : x
  2. Step 2: Convert to fraction form
    103,507.65/155,206.80 = 44,276.40/x
  3. Step 3: Cross multiply
    103,507.65x = 155,206.80 × 44,276.40
  4. Step 4: Simplify right side
    103,507.65x = 6,871,998,359.52
  5. Step 5: Solve for x
    x = 6,871,998,359.52/103,507.65
  6. Step 6: Final answer
    x = 66,391.21

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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.