Home / 151,390,879.20-208,919,381.22-81,776,261.88

Finding the Fourth Proportional to 151,390,879.20, 208,919,381.22 and 81,776,261.88

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Solution

The fourth proportional to 151,390,879.20, 208,919,381.22 and 81,776,261.88 is: 112,851,224.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,390,879.20 : 208,919,381.22 = 81,776,261.88 : x
  2. Step 2: Convert to fraction form
    151,390,879.20/208,919,381.22 = 81,776,261.88/x
  3. Step 3: Cross multiply
    151,390,879.20x = 208,919,381.22 × 81,776,261.88
  4. Step 4: Simplify right side
    151,390,879.20x = 17,084,646,030,454,272
  5. Step 5: Solve for x
    x = 17,084,646,030,454,272/151,390,879.20
  6. Step 6: Final answer
    x = 112,851,224.07

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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.