Home / 191,447.18-287,170.84-86,143.13

Finding the Fourth Proportional to 191,447.18, 287,170.84 and 86,143.13

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Solution

The fourth proportional to 191,447.18, 287,170.84 and 86,143.13 is: 129,214.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,447.18 : 287,170.84 = 86,143.13 : x
  2. Step 2: Convert to fraction form
    191,447.18/287,170.84 = 86,143.13/x
  3. Step 3: Cross multiply
    191,447.18x = 287,170.84 × 86,143.13
  4. Step 4: Simplify right side
    191,447.18x = 24,737,794,266.49
  5. Step 5: Solve for x
    x = 24,737,794,266.49/191,447.18
  6. Step 6: Final answer
    x = 129,214.72

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1.5x scale

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.