Home / 189,140.12-261,005.51-103,097.21

Finding the Fourth Proportional to 189,140.12, 261,005.51 and 103,097.21

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Solution

The fourth proportional to 189,140.12, 261,005.51 and 103,097.21 is: 142,269.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,140.12 : 261,005.51 = 103,097.21 : x
  2. Step 2: Convert to fraction form
    189,140.12/261,005.51 = 103,097.21/x
  3. Step 3: Cross multiply
    189,140.12x = 261,005.51 × 103,097.21
  4. Step 4: Simplify right side
    189,140.12x = 26,908,940,012.65
  5. Step 5: Solve for x
    x = 26,908,940,012.65/189,140.12
  6. Step 6: Final answer
    x = 142,269.87

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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.