Home / 151,395,715.92-208,925,927.72-81,781,085.84

Finding the Fourth Proportional to 151,395,715.92, 208,925,927.72 and 81,781,085.84

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Solution

The fourth proportional to 151,395,715.92, 208,925,927.72 and 81,781,085.84 is: 112,857,811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,395,715.92 : 208,925,927.72 = 81,781,085.84 : x
  2. Step 2: Convert to fraction form
    151,395,715.92/208,925,927.72 = 81,781,085.84/x
  3. Step 3: Cross multiply
    151,395,715.92x = 208,925,927.72 × 81,781,085.84
  4. Step 4: Simplify right side
    151,395,715.92x = 17,086,189,229,070,956
  5. Step 5: Solve for x
    x = 17,086,189,229,070,956/151,395,715.92
  6. Step 6: Final answer
    x = 112,857,811.90

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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.