Home / 138,219,153.42-190,739,002.05-79,480,419.06

Finding the Fourth Proportional to 138,219,153.42, 190,739,002.05 and 79,480,419.06

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Solution

The fourth proportional to 138,219,153.42, 190,739,002.05 and 79,480,419.06 is: 109,681,006.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,219,153.42 : 190,739,002.05 = 79,480,419.06 : x
  2. Step 2: Convert to fraction form
    138,219,153.42/190,739,002.05 = 79,480,419.06/x
  3. Step 3: Cross multiply
    138,219,153.42x = 190,739,002.05 × 79,480,419.06
  4. Step 4: Simplify right side
    138,219,153.42x = 15,160,015,814,020,200
  5. Step 5: Solve for x
    x = 15,160,015,814,020,200/138,219,153.42
  6. Step 6: Final answer
    x = 109,681,006.13

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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.