Home / 151,395,134.06-208,925,124.59-81,780,503.78

Finding the Fourth Proportional to 151,395,134.06, 208,925,124.59 and 81,780,503.78

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Solution

The fourth proportional to 151,395,134.06, 208,925,124.59 and 81,780,503.78 is: 112,857,008.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,395,134.06 : 208,925,124.59 = 81,780,503.78 : x
  2. Step 2: Convert to fraction form
    151,395,134.06/208,925,124.59 = 81,780,503.78/x
  3. Step 3: Cross multiply
    151,395,134.06x = 208,925,124.59 × 81,780,503.78
  4. Step 4: Simplify right side
    151,395,134.06x = 17,086,001,941,996,230
  5. Step 5: Solve for x
    x = 17,086,001,941,996,230/151,395,134.06
  6. Step 6: Final answer
    x = 112,857,008.57

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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.