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Finding the Fourth Proportional to 145,399.65, 218,063.01 and 103,156.53

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Solution

The fourth proportional to 145,399.65, 218,063.01 and 103,156.53 is: 154,708.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,399.65 : 218,063.01 = 103,156.53 : x
  2. Step 2: Convert to fraction form
    145,399.65/218,063.01 = 103,156.53/x
  3. Step 3: Cross multiply
    145,399.65x = 218,063.01 × 103,156.53
  4. Step 4: Simplify right side
    145,399.65x = 22,494,623,432.96
  5. Step 5: Solve for x
    x = 22,494,623,432.96/145,399.65
  6. Step 6: Final answer
    x = 154,708.92

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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.