Home / 257,151.10-385,828.08-79,671.91

Finding the Fourth Proportional to 257,151.10, 385,828.08 and 79,671.91

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Solution

The fourth proportional to 257,151.10, 385,828.08 and 79,671.91 is: 119,539.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,151.10 : 385,828.08 = 79,671.91 : x
  2. Step 2: Convert to fraction form
    257,151.10/385,828.08 = 79,671.91/x
  3. Step 3: Cross multiply
    257,151.10x = 385,828.08 × 79,671.91
  4. Step 4: Simplify right side
    257,151.10x = 30,739,660,065.23
  5. Step 5: Solve for x
    x = 30,739,660,065.23/257,151.10
  6. Step 6: Final answer
    x = 119,539.29

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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.