Home / 191,581.20-287,371.80-73,256.40

Finding the Fourth Proportional to 191,581.20, 287,371.80 and 73,256.40

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Solution

The fourth proportional to 191,581.20, 287,371.80 and 73,256.40 is: 109,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,581.20 : 287,371.80 = 73,256.40 : x
  2. Step 2: Convert to fraction form
    191,581.20/287,371.80 = 73,256.40/x
  3. Step 3: Cross multiply
    191,581.20x = 287,371.80 × 73,256.40
  4. Step 4: Simplify right side
    191,581.20x = 21,051,823,529.52
  5. Step 5: Solve for x
    x = 21,051,823,529.52/191,581.20
  6. Step 6: Final answer
    x = 109,884.60

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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.