Home / 138,219,151.92-190,738,999.98-79,480,417.56

Finding the Fourth Proportional to 138,219,151.92, 190,738,999.98 and 79,480,417.56

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Solution

The fourth proportional to 138,219,151.92, 190,738,999.98 and 79,480,417.56 is: 109,681,004.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,219,151.92 : 190,738,999.98 = 79,480,417.56 : x
  2. Step 2: Convert to fraction form
    138,219,151.92/190,738,999.98 = 79,480,417.56/x
  3. Step 3: Cross multiply
    138,219,151.92x = 190,738,999.98 × 79,480,417.56
  4. Step 4: Simplify right side
    138,219,151.92x = 15,160,015,363,387,232
  5. Step 5: Solve for x
    x = 15,160,015,363,387,232/138,219,151.92
  6. Step 6: Final answer
    x = 109,681,004.06

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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.