Home / 99,739.63-149,689.17-51,721.88

Finding the Fourth Proportional to 99,739.63, 149,689.17 and 51,721.88

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Solution

The fourth proportional to 99,739.63, 149,689.17 and 51,721.88 is: 77,624.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,739.63 : 149,689.17 = 51,721.88 : x
  2. Step 2: Convert to fraction form
    99,739.63/149,689.17 = 51,721.88/x
  3. Step 3: Cross multiply
    99,739.63x = 149,689.17 × 51,721.88
  4. Step 4: Simplify right side
    99,739.63x = 7,742,205,288.04
  5. Step 5: Solve for x
    x = 7,742,205,288.04/99,739.63
  6. Step 6: Final answer
    x = 77,624.16

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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.