Home / 121,443,999.87-167,592,738.99-65,689,395.78

Finding the Fourth Proportional to 121,443,999.87, 167,592,738.99 and 65,689,395.78

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Solution

The fourth proportional to 121,443,999.87, 167,592,738.99 and 65,689,395.78 is: 90,651,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,443,999.87 : 167,592,738.99 = 65,689,395.78 : x
  2. Step 2: Convert to fraction form
    121,443,999.87/167,592,738.99 = 65,689,395.78/x
  3. Step 3: Cross multiply
    121,443,999.87x = 167,592,738.99 × 65,689,395.78
  4. Step 4: Simplify right side
    121,443,999.87x = 11,009,065,761,368,348
  5. Step 5: Solve for x
    x = 11,009,065,761,368,348/121,443,999.87
  6. Step 6: Final answer
    x = 90,651,376.55

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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.