Home / 151,421,684.56-208,961,930.82-81,807,065.22

Finding the Fourth Proportional to 151,421,684.56, 208,961,930.82 and 81,807,065.22

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Solution

The fourth proportional to 151,421,684.56, 208,961,930.82 and 81,807,065.22 is: 112,893,753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,421,684.56 : 208,961,930.82 = 81,807,065.22 : x
  2. Step 2: Convert to fraction form
    151,421,684.56/208,961,930.82 = 81,807,065.22/x
  3. Step 3: Cross multiply
    151,421,684.56x = 208,961,930.82 × 81,807,065.22
  4. Step 4: Simplify right side
    151,421,684.56x = 17,094,562,302,612,036
  5. Step 5: Solve for x
    x = 17,094,562,302,612,036/151,421,684.56
  6. Step 6: Final answer
    x = 112,893,753.31

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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.