Home / 191,904.90-287,854.65-86,723.70

Finding the Fourth Proportional to 191,904.90, 287,854.65 and 86,723.70

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Solution

The fourth proportional to 191,904.90, 287,854.65 and 86,723.70 is: 130,084.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,904.90 : 287,854.65 = 86,723.70 : x
  2. Step 2: Convert to fraction form
    191,904.90/287,854.65 = 86,723.70/x
  3. Step 3: Cross multiply
    191,904.90x = 287,854.65 × 86,723.70
  4. Step 4: Simplify right side
    191,904.90x = 24,963,820,310.21
  5. Step 5: Solve for x
    x = 24,963,820,310.21/191,904.90
  6. Step 6: Final answer
    x = 130,084.33

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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.