Home / 121,931,732.45-168,265,953.25-66,177,152.89

Finding the Fourth Proportional to 121,931,732.45, 168,265,953.25 and 66,177,152.89

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Solution

The fourth proportional to 121,931,732.45, 168,265,953.25 and 66,177,152.89 is: 91,324,559.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,931,732.45 : 168,265,953.25 = 66,177,152.89 : x
  2. Step 2: Convert to fraction form
    121,931,732.45/168,265,953.25 = 66,177,152.89/x
  3. Step 3: Cross multiply
    121,931,732.45x = 168,265,953.25 × 66,177,152.89
  4. Step 4: Simplify right side
    121,931,732.45x = 11,135,361,713,820,736
  5. Step 5: Solve for x
    x = 11,135,361,713,820,736/121,931,732.45
  6. Step 6: Final answer
    x = 91,324,559.16

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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.