Home / 191,719.40-287,363.10-91,927.40

Finding the Fourth Proportional to 191,719.40, 287,363.10 and 91,927.40

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Solution

The fourth proportional to 191,719.40, 287,363.10 and 91,927.40 is: 137,787.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,719.40 : 287,363.10 = 91,927.40 : x
  2. Step 2: Convert to fraction form
    191,719.40/287,363.10 = 91,927.40/x
  3. Step 3: Cross multiply
    191,719.40x = 287,363.10 × 91,927.40
  4. Step 4: Simplify right side
    191,719.40x = 26,416,542,638.94
  5. Step 5: Solve for x
    x = 26,416,542,638.94/191,719.40
  6. Step 6: Final answer
    x = 137,787.53

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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.