Home / 121,287.80-181,931.70-109,623.80

Finding the Fourth Proportional to 121,287.80, 181,931.70 and 109,623.80

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Solution

The fourth proportional to 121,287.80, 181,931.70 and 109,623.80 is: 164,435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287.80 : 181,931.70 = 109,623.80 : x
  2. Step 2: Convert to fraction form
    121,287.80/181,931.70 = 109,623.80/x
  3. Step 3: Cross multiply
    121,287.80x = 181,931.70 × 109,623.80
  4. Step 4: Simplify right side
    121,287.80x = 19,944,044,294.46
  5. Step 5: Solve for x
    x = 19,944,044,294.46/121,287.80
  6. Step 6: Final answer
    x = 164,435.70

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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.