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Finding the Fourth Proportional to 119,347.47, 178,895.66 and 91,206.45

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Solution

The fourth proportional to 119,347.47, 178,895.66 and 91,206.45 is: 136,713.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,347.47 : 178,895.66 = 91,206.45 : x
  2. Step 2: Convert to fraction form
    119,347.47/178,895.66 = 91,206.45/x
  3. Step 3: Cross multiply
    119,347.47x = 178,895.66 × 91,206.45
  4. Step 4: Simplify right side
    119,347.47x = 16,316,437,612.97
  5. Step 5: Solve for x
    x = 16,316,437,612.97/119,347.47
  6. Step 6: Final answer
    x = 136,713.73

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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.