Home / 131,429.75-181,373.07-71,813.75

Finding the Fourth Proportional to 131,429.75, 181,373.07 and 71,813.75

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Solution

The fourth proportional to 131,429.75, 181,373.07 and 71,813.75 is: 99,102.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,429.75 : 181,373.07 = 71,813.75 : x
  2. Step 2: Convert to fraction form
    131,429.75/181,373.07 = 71,813.75/x
  3. Step 3: Cross multiply
    131,429.75x = 181,373.07 × 71,813.75
  4. Step 4: Simplify right side
    131,429.75x = 13,025,080,305.71
  5. Step 5: Solve for x
    x = 13,025,080,305.71/131,429.75
  6. Step 6: Final answer
    x = 99,102.98

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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.