Home / 187,780.07-281,784.93-75,439.35

Finding the Fourth Proportional to 187,780.07, 281,784.93 and 75,439.35

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Solution

The fourth proportional to 187,780.07, 281,784.93 and 75,439.35 is: 113,205.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,780.07 : 281,784.93 = 75,439.35 : x
  2. Step 2: Convert to fraction form
    187,780.07/281,784.93 = 75,439.35/x
  3. Step 3: Cross multiply
    187,780.07x = 281,784.93 × 75,439.35
  4. Step 4: Simplify right side
    187,780.07x = 21,257,671,676.10
  5. Step 5: Solve for x
    x = 21,257,671,676.10/187,780.07
  6. Step 6: Final answer
    x = 113,205.15

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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.