Home / 191,711.09-287,535.45-90,508.94

Finding the Fourth Proportional to 191,711.09, 287,535.45 and 90,508.94

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Solution

The fourth proportional to 191,711.09, 287,535.45 and 90,508.94 is: 135,748.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,711.09 : 287,535.45 = 90,508.94 : x
  2. Step 2: Convert to fraction form
    191,711.09/287,535.45 = 90,508.94/x
  3. Step 3: Cross multiply
    191,711.09x = 287,535.45 × 90,508.94
  4. Step 4: Simplify right side
    191,711.09x = 26,024,528,771.91
  5. Step 5: Solve for x
    x = 26,024,528,771.91/191,711.09
  6. Step 6: Final answer
    x = 135,748.69

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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.