Home / 103,729.89-143,150.09-63,442.92

Finding the Fourth Proportional to 103,729.89, 143,150.09 and 63,442.92

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Solution

The fourth proportional to 103,729.89, 143,150.09 and 63,442.92 is: 87,552.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,729.89 : 143,150.09 = 63,442.92 : x
  2. Step 2: Convert to fraction form
    103,729.89/143,150.09 = 63,442.92/x
  3. Step 3: Cross multiply
    103,729.89x = 143,150.09 × 63,442.92
  4. Step 4: Simplify right side
    103,729.89x = 9,081,859,390.65
  5. Step 5: Solve for x
    x = 9,081,859,390.65/103,729.89
  6. Step 6: Final answer
    x = 87,552.96

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1.5x scale

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.