Home / 191,821.77-287,631.20-85,159.35

Finding the Fourth Proportional to 191,821.77, 287,631.20 and 85,159.35

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Solution

The fourth proportional to 191,821.77, 287,631.20 and 85,159.35 is: 127,693.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,821.77 : 287,631.20 = 85,159.35 : x
  2. Step 2: Convert to fraction form
    191,821.77/287,631.20 = 85,159.35/x
  3. Step 3: Cross multiply
    191,821.77x = 287,631.20 × 85,159.35
  4. Step 4: Simplify right side
    191,821.77x = 24,494,486,244.62
  5. Step 5: Solve for x
    x = 24,494,486,244.62/191,821.77
  6. Step 6: Final answer
    x = 127,693.99

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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.