Home / 131,737.14-181,902.05-121,661.89

Finding the Fourth Proportional to 131,737.14, 181,902.05 and 121,661.89

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Solution

The fourth proportional to 131,737.14, 181,902.05 and 121,661.89 is: 167,990.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,737.14 : 181,902.05 = 121,661.89 : x
  2. Step 2: Convert to fraction form
    131,737.14/181,902.05 = 121,661.89/x
  3. Step 3: Cross multiply
    131,737.14x = 181,902.05 × 121,661.89
  4. Step 4: Simplify right side
    131,737.14x = 22,130,547,197.87
  5. Step 5: Solve for x
    x = 22,130,547,197.87/131,737.14
  6. Step 6: Final answer
    x = 167,990.19

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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.