Home / 191,313.29-287,025.98-78,999.91

Finding the Fourth Proportional to 191,313.29, 287,025.98 and 78,999.91

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Solution

The fourth proportional to 191,313.29, 287,025.98 and 78,999.91 is: 118,523.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,313.29 : 287,025.98 = 78,999.91 : x
  2. Step 2: Convert to fraction form
    191,313.29/287,025.98 = 78,999.91/x
  3. Step 3: Cross multiply
    191,313.29x = 287,025.98 × 78,999.91
  4. Step 4: Simplify right side
    191,313.29x = 22,675,025,919.47
  5. Step 5: Solve for x
    x = 22,675,025,919.47/191,313.29
  6. Step 6: Final answer
    x = 118,523.00

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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.