Home / 187,980.29-259,429.20-103,113.75

Finding the Fourth Proportional to 187,980.29, 259,429.20 and 103,113.75

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Solution

The fourth proportional to 187,980.29, 259,429.20 and 103,113.75 is: 142,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,980.29 : 259,429.20 = 103,113.75 : x
  2. Step 2: Convert to fraction form
    187,980.29/259,429.20 = 103,113.75/x
  3. Step 3: Cross multiply
    187,980.29x = 259,429.20 × 103,113.75
  4. Step 4: Simplify right side
    187,980.29x = 26,750,717,671.50
  5. Step 5: Solve for x
    x = 26,750,717,671.50/187,980.29
  6. Step 6: Final answer
    x = 142,305.97

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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.