Home / 191,669.86-287,638.19-79,350.66

Finding the Fourth Proportional to 191,669.86, 287,638.19 and 79,350.66

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Solution

The fourth proportional to 191,669.86, 287,638.19 and 79,350.66 is: 119,081.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,669.86 : 287,638.19 = 79,350.66 : x
  2. Step 2: Convert to fraction form
    191,669.86/287,638.19 = 79,350.66/x
  3. Step 3: Cross multiply
    191,669.86x = 287,638.19 × 79,350.66
  4. Step 4: Simplify right side
    191,669.86x = 22,824,280,217.71
  5. Step 5: Solve for x
    x = 22,824,280,217.71/191,669.86
  6. Step 6: Final answer
    x = 119,081.22

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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.