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Finding the Fourth Proportional to 131,466, 181,423.08 and 74,910.18

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Solution

The fourth proportional to 131,466, 181,423.08 and 74,910.18 is: 103,376.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,466 : 181,423.08 = 74,910.18 : x
  2. Step 2: Convert to fraction form
    131,466/181,423.08 = 74,910.18/x
  3. Step 3: Cross multiply
    131,466x = 181,423.08 × 74,910.18
  4. Step 4: Simplify right side
    131,466x = 13,590,435,578.95
  5. Step 5: Solve for x
    x = 13,590,435,578.95/131,466
  6. Step 6: Final answer
    x = 103,376.05

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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.