Home / 121,996,967.68-168,350,810.52-66,240,221.56

Finding the Fourth Proportional to 121,996,967.68, 168,350,810.52 and 66,240,221.56

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Solution

The fourth proportional to 121,996,967.68, 168,350,810.52 and 66,240,221.56 is: 91,408,788.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,996,967.68 : 168,350,810.52 = 66,240,221.56 : x
  2. Step 2: Convert to fraction form
    121,996,967.68/168,350,810.52 = 66,240,221.56/x
  3. Step 3: Cross multiply
    121,996,967.68x = 168,350,810.52 × 66,240,221.56
  4. Step 4: Simplify right side
    121,996,967.68x = 11,151,594,988,650,380
  5. Step 5: Solve for x
    x = 11,151,594,988,650,380/121,996,967.68
  6. Step 6: Final answer
    x = 91,408,788.27

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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.