Home / 191,588.50-287,637.09-163,687.78

Finding the Fourth Proportional to 191,588.50, 287,637.09 and 163,687.78

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Solution

The fourth proportional to 191,588.50, 287,637.09 and 163,687.78 is: 245,748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,588.50 : 287,637.09 = 163,687.78 : x
  2. Step 2: Convert to fraction form
    191,588.50/287,637.09 = 163,687.78/x
  3. Step 3: Cross multiply
    191,588.50x = 287,637.09 × 163,687.78
  4. Step 4: Simplify right side
    191,588.50x = 47,082,676,707.76
  5. Step 5: Solve for x
    x = 47,082,676,707.76/191,588.50
  6. Step 6: Final answer
    x = 245,748.97

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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.