Home / 191,724.90-287,584.65-86,543.70

Finding the Fourth Proportional to 191,724.90, 287,584.65 and 86,543.70

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Solution

The fourth proportional to 191,724.90, 287,584.65 and 86,543.70 is: 129,814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,724.90 : 287,584.65 = 86,543.70 : x
  2. Step 2: Convert to fraction form
    191,724.90/287,584.65 = 86,543.70/x
  3. Step 3: Cross multiply
    191,724.90x = 287,584.65 × 86,543.70
  4. Step 4: Simplify right side
    191,724.90x = 24,888,639,674.21
  5. Step 5: Solve for x
    x = 24,888,639,674.21/191,724.90
  6. Step 6: Final answer
    x = 129,814.33

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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.