Home / 207,156.17-285,914.75-129,667.75

Finding the Fourth Proportional to 207,156.17, 285,914.75 and 129,667.75

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Solution

The fourth proportional to 207,156.17, 285,914.75 and 129,667.75 is: 178,966.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,156.17 : 285,914.75 = 129,667.75 : x
  2. Step 2: Convert to fraction form
    207,156.17/285,914.75 = 129,667.75/x
  3. Step 3: Cross multiply
    207,156.17x = 285,914.75 × 129,667.75
  4. Step 4: Simplify right side
    207,156.17x = 37,073,920,961.19
  5. Step 5: Solve for x
    x = 37,073,920,961.19/207,156.17
  6. Step 6: Final answer
    x = 178,966.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.