Home / 191,578.06-287,349.36-90,352.90

Finding the Fourth Proportional to 191,578.06, 287,349.36 and 90,352.90

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Solution

The fourth proportional to 191,578.06, 287,349.36 and 90,352.90 is: 135,520.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,578.06 : 287,349.36 = 90,352.90 : x
  2. Step 2: Convert to fraction form
    191,578.06/287,349.36 = 90,352.90/x
  3. Step 3: Cross multiply
    191,578.06x = 287,349.36 × 90,352.90
  4. Step 4: Simplify right side
    191,578.06x = 25,962,847,989.14
  5. Step 5: Solve for x
    x = 25,962,847,989.14/191,578.06
  6. Step 6: Final answer
    x = 135,520.99

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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.