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Finding the Fourth Proportional to 121,934.65, 168,262.93 and 67,483.81

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Solution

The fourth proportional to 121,934.65, 168,262.93 and 67,483.81 is: 93,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,934.65 : 168,262.93 = 67,483.81 : x
  2. Step 2: Convert to fraction form
    121,934.65/168,262.93 = 67,483.81/x
  3. Step 3: Cross multiply
    121,934.65x = 168,262.93 × 67,483.81
  4. Step 4: Simplify right side
    121,934.65x = 11,355,023,598.16
  5. Step 5: Solve for x
    x = 11,355,023,598.16/121,934.65
  6. Step 6: Final answer
    x = 93,123.85

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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.