Home / 101,429.30-152,165.55-31,315.70

Finding the Fourth Proportional to 101,429.30, 152,165.55 and 31,315.70

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Solution

The fourth proportional to 101,429.30, 152,165.55 and 31,315.70 is: 46,980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,429.30 : 152,165.55 = 31,315.70 : x
  2. Step 2: Convert to fraction form
    101,429.30/152,165.55 = 31,315.70/x
  3. Step 3: Cross multiply
    101,429.30x = 152,165.55 × 31,315.70
  4. Step 4: Simplify right side
    101,429.30x = 4,765,170,714.14
  5. Step 5: Solve for x
    x = 4,765,170,714.14/101,429.30
  6. Step 6: Final answer
    x = 46,980.22

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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.