Home / 121,845.46-168,182.50-70,870.18

Finding the Fourth Proportional to 121,845.46, 168,182.50 and 70,870.18

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Solution

The fourth proportional to 121,845.46, 168,182.50 and 70,870.18 is: 97,821.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,845.46 : 168,182.50 = 70,870.18 : x
  2. Step 2: Convert to fraction form
    121,845.46/168,182.50 = 70,870.18/x
  3. Step 3: Cross multiply
    121,845.46x = 168,182.50 × 70,870.18
  4. Step 4: Simplify right side
    121,845.46x = 11,919,124,047.85
  5. Step 5: Solve for x
    x = 11,919,124,047.85/121,845.46
  6. Step 6: Final answer
    x = 97,821.65

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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.