Home / 191,747.90-287,619.15-86,566.70

Finding the Fourth Proportional to 191,747.90, 287,619.15 and 86,566.70

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Solution

The fourth proportional to 191,747.90, 287,619.15 and 86,566.70 is: 129,848.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,747.90 : 287,619.15 = 86,566.70 : x
  2. Step 2: Convert to fraction form
    191,747.90/287,619.15 = 86,566.70/x
  3. Step 3: Cross multiply
    191,747.90x = 287,619.15 × 86,566.70
  4. Step 4: Simplify right side
    191,747.90x = 24,898,240,672.31
  5. Step 5: Solve for x
    x = 24,898,240,672.31/191,747.90
  6. Step 6: Final answer
    x = 129,848.83

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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.