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Finding the Fourth Proportional to 119,411.86, 178,064.30 and 118,345.90

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Solution

The fourth proportional to 119,411.86, 178,064.30 and 118,345.90 is: 176,474.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,411.86 : 178,064.30 = 118,345.90 : x
  2. Step 2: Convert to fraction form
    119,411.86/178,064.30 = 118,345.90/x
  3. Step 3: Cross multiply
    119,411.86x = 178,064.30 × 118,345.90
  4. Step 4: Simplify right side
    119,411.86x = 21,073,179,841.37
  5. Step 5: Solve for x
    x = 21,073,179,841.37/119,411.86
  6. Step 6: Final answer
    x = 176,474.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.