Home / 121,011.10-181,516.65-71,115.10

Finding the Fourth Proportional to 121,011.10, 181,516.65 and 71,115.10

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Solution

The fourth proportional to 121,011.10, 181,516.65 and 71,115.10 is: 106,672.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,011.10 : 181,516.65 = 71,115.10 : x
  2. Step 2: Convert to fraction form
    121,011.10/181,516.65 = 71,115.10/x
  3. Step 3: Cross multiply
    121,011.10x = 181,516.65 × 71,115.10
  4. Step 4: Simplify right side
    121,011.10x = 12,908,574,716.42
  5. Step 5: Solve for x
    x = 12,908,574,716.42/121,011.10
  6. Step 6: Final answer
    x = 106,672.65

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1.5x scale

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.