Home / 121,011.53-181,513.17-46,128.96

Finding the Fourth Proportional to 121,011.53, 181,513.17 and 46,128.96

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Solution

The fourth proportional to 121,011.53, 181,513.17 and 46,128.96 is: 69,191.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,011.53 : 181,513.17 = 46,128.96 : x
  2. Step 2: Convert to fraction form
    121,011.53/181,513.17 = 46,128.96/x
  3. Step 3: Cross multiply
    121,011.53x = 181,513.17 × 46,128.96
  4. Step 4: Simplify right side
    121,011.53x = 8,373,013,758.40
  5. Step 5: Solve for x
    x = 8,373,013,758.40/121,011.53
  6. Step 6: Final answer
    x = 69,191.87

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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.