Home / 151,389,430.79-208,917,498.78-81,774,812.25

Finding the Fourth Proportional to 151,389,430.79, 208,917,498.78 and 81,774,812.25

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Solution

The fourth proportional to 151,389,430.79, 208,917,498.78 and 81,774,812.25 is: 112,849,286.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,389,430.79 : 208,917,498.78 = 81,774,812.25 : x
  2. Step 2: Convert to fraction form
    151,389,430.79/208,917,498.78 = 81,774,812.25/x
  3. Step 3: Cross multiply
    151,389,430.79x = 208,917,498.78 × 81,774,812.25
  4. Step 4: Simplify right side
    151,389,430.79x = 17,084,189,238,474,104
  5. Step 5: Solve for x
    x = 17,084,189,238,474,104/151,389,430.79
  6. Step 6: Final answer
    x = 112,849,286.44

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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.