Home / 187,432.40-280,837.56-131,911.76

Finding the Fourth Proportional to 187,432.40, 280,837.56 and 131,911.76

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Solution

The fourth proportional to 187,432.40, 280,837.56 and 131,911.76 is: 197,648.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,432.40 : 280,837.56 = 131,911.76 : x
  2. Step 2: Convert to fraction form
    187,432.40/280,837.56 = 131,911.76/x
  3. Step 3: Cross multiply
    187,432.40x = 280,837.56 × 131,911.76
  4. Step 4: Simplify right side
    187,432.40x = 37,045,776,813.71
  5. Step 5: Solve for x
    x = 37,045,776,813.71/187,432.40
  6. Step 6: Final answer
    x = 197,648.74

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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.