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Finding the Fourth Proportional to 119,143.91, 178,531.29 and 94,121.87

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Solution

The fourth proportional to 119,143.91, 178,531.29 and 94,121.87 is: 141,036.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,143.91 : 178,531.29 = 94,121.87 : x
  2. Step 2: Convert to fraction form
    119,143.91/178,531.29 = 94,121.87/x
  3. Step 3: Cross multiply
    119,143.91x = 178,531.29 × 94,121.87
  4. Step 4: Simplify right side
    119,143.91x = 16,803,697,975.66
  5. Step 5: Solve for x
    x = 16,803,697,975.66/119,143.91
  6. Step 6: Final answer
    x = 141,036.98

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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.