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Finding the Fourth Proportional to 144,174.61, 198,966.59 and 79,647.18

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Solution

The fourth proportional to 144,174.61, 198,966.59 and 79,647.18 is: 109,916.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,174.61 : 198,966.59 = 79,647.18 : x
  2. Step 2: Convert to fraction form
    144,174.61/198,966.59 = 79,647.18/x
  3. Step 3: Cross multiply
    144,174.61x = 198,966.59 × 79,647.18
  4. Step 4: Simplify right side
    144,174.61x = 15,847,127,807.72
  5. Step 5: Solve for x
    x = 15,847,127,807.72/144,174.61
  6. Step 6: Final answer
    x = 109,916.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.