Home / 191,281.48-263,991.18-109,638.95

Finding the Fourth Proportional to 191,281.48, 263,991.18 and 109,638.95

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Solution

The fourth proportional to 191,281.48, 263,991.18 and 109,638.95 is: 151,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,281.48 : 263,991.18 = 109,638.95 : x
  2. Step 2: Convert to fraction form
    191,281.48/263,991.18 = 109,638.95/x
  3. Step 3: Cross multiply
    191,281.48x = 263,991.18 × 109,638.95
  4. Step 4: Simplify right side
    191,281.48x = 28,943,714,875.65
  5. Step 5: Solve for x
    x = 28,943,714,875.65/191,281.48
  6. Step 6: Final answer
    x = 151,314.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.