Home / 121,984.35-168,306.33-70,288.74

Finding the Fourth Proportional to 121,984.35, 168,306.33 and 70,288.74

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Solution

The fourth proportional to 121,984.35, 168,306.33 and 70,288.74 is: 96,979.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,984.35 : 168,306.33 = 70,288.74 : x
  2. Step 2: Convert to fraction form
    121,984.35/168,306.33 = 70,288.74/x
  3. Step 3: Cross multiply
    121,984.35x = 168,306.33 × 70,288.74
  4. Step 4: Simplify right side
    121,984.35x = 11,830,039,869.72
  5. Step 5: Solve for x
    x = 11,830,039,869.72/121,984.35
  6. Step 6: Final answer
    x = 96,979.98

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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.