Home / 151,389,785.92-208,917,985.32-81,775,165.36

Finding the Fourth Proportional to 151,389,785.92, 208,917,985.32 and 81,775,165.36

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Solution

The fourth proportional to 151,389,785.92, 208,917,985.32 and 81,775,165.36 is: 112,849,771.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,389,785.92 : 208,917,985.32 = 81,775,165.36 : x
  2. Step 2: Convert to fraction form
    151,389,785.92/208,917,985.32 = 81,775,165.36/x
  3. Step 3: Cross multiply
    151,389,785.92x = 208,917,985.32 × 81,775,165.36
  4. Step 4: Simplify right side
    151,389,785.92x = 17,084,302,796,221,052
  5. Step 5: Solve for x
    x = 17,084,302,796,221,052/151,389,785.92
  6. Step 6: Final answer
    x = 112,849,771.82

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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.