Home / 120,357.01-180,543.71-31,610.36

Finding the Fourth Proportional to 120,357.01, 180,543.71 and 31,610.36

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Solution

The fourth proportional to 120,357.01, 180,543.71 and 31,610.36 is: 47,417.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,357.01 : 180,543.71 = 31,610.36 : x
  2. Step 2: Convert to fraction form
    120,357.01/180,543.71 = 31,610.36/x
  3. Step 3: Cross multiply
    120,357.01x = 180,543.71 × 31,610.36
  4. Step 4: Simplify right side
    120,357.01x = 5,707,051,668.84
  5. Step 5: Solve for x
    x = 5,707,051,668.84/120,357.01
  6. Step 6: Final answer
    x = 47,417.69

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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.