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Finding the Fourth Proportional to 119,328.76, 178,983.76 and 69,377

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Solution

The fourth proportional to 119,328.76, 178,983.76 and 69,377 is: 104,060.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,328.76 : 178,983.76 = 69,377 : x
  2. Step 2: Convert to fraction form
    119,328.76/178,983.76 = 69,377/x
  3. Step 3: Cross multiply
    119,328.76x = 178,983.76 × 69,377
  4. Step 4: Simplify right side
    119,328.76x = 12,417,356,317.52
  5. Step 5: Solve for x
    x = 12,417,356,317.52/119,328.76
  6. Step 6: Final answer
    x = 104,060.05

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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.