Home / 121,857,152.56-168,162,858.04-68,932,729.52

Finding the Fourth Proportional to 121,857,152.56, 168,162,858.04 and 68,932,729.52

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Solution

The fourth proportional to 121,857,152.56, 168,162,858.04 and 68,932,729.52 is: 95,127,159.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,857,152.56 : 168,162,858.04 = 68,932,729.52 : x
  2. Step 2: Convert to fraction form
    121,857,152.56/168,162,858.04 = 68,932,729.52/x
  3. Step 3: Cross multiply
    121,857,152.56x = 168,162,858.04 × 68,932,729.52
  4. Step 4: Simplify right side
    121,857,152.56x = 11,591,924,808,581,476
  5. Step 5: Solve for x
    x = 11,591,924,808,581,476/121,857,152.56
  6. Step 6: Final answer
    x = 95,127,159.67

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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.