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Finding the Fourth Proportional to 119,303.28, 178,565.52 and 87,704.98

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Solution

The fourth proportional to 119,303.28, 178,565.52 and 87,704.98 is: 131,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,303.28 : 178,565.52 = 87,704.98 : x
  2. Step 2: Convert to fraction form
    119,303.28/178,565.52 = 87,704.98/x
  3. Step 3: Cross multiply
    119,303.28x = 178,565.52 × 87,704.98
  4. Step 4: Simplify right side
    119,303.28x = 15,661,084,921.76
  5. Step 5: Solve for x
    x = 15,661,084,921.76/119,303.28
  6. Step 6: Final answer
    x = 131,271.20

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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.