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Finding the Fourth Proportional to 102,703.62, 153,989.47 and 42,773.65

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Solution

The fourth proportional to 102,703.62, 153,989.47 and 42,773.65 is: 64,133.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,703.62 : 153,989.47 = 42,773.65 : x
  2. Step 2: Convert to fraction form
    102,703.62/153,989.47 = 42,773.65/x
  3. Step 3: Cross multiply
    102,703.62x = 153,989.47 × 42,773.65
  4. Step 4: Simplify right side
    102,703.62x = 6,586,691,361.96
  5. Step 5: Solve for x
    x = 6,586,691,361.96/102,703.62
  6. Step 6: Final answer
    x = 64,133.00

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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.