Home / 191,511.72-287,287.20-73,282.50

Finding the Fourth Proportional to 191,511.72, 287,287.20 and 73,282.50

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Solution

The fourth proportional to 191,511.72, 287,287.20 and 73,282.50 is: 109,931.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,511.72 : 287,287.20 = 73,282.50 : x
  2. Step 2: Convert to fraction form
    191,511.72/287,287.20 = 73,282.50/x
  3. Step 3: Cross multiply
    191,511.72x = 287,287.20 × 73,282.50
  4. Step 4: Simplify right side
    191,511.72x = 21,053,124,234
  5. Step 5: Solve for x
    x = 21,053,124,234/191,511.72
  6. Step 6: Final answer
    x = 109,931.26

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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.