Home / 151,389,278.54-208,917,288.34-81,774,659.78

Finding the Fourth Proportional to 151,389,278.54, 208,917,288.34 and 81,774,659.78

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Solution

The fourth proportional to 151,389,278.54, 208,917,288.34 and 81,774,659.78 is: 112,849,075.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,389,278.54 : 208,917,288.34 = 81,774,659.78 : x
  2. Step 2: Convert to fraction form
    151,389,278.54/208,917,288.34 = 81,774,659.78/x
  3. Step 3: Cross multiply
    151,389,278.54x = 208,917,288.34 × 81,774,659.78
  4. Step 4: Simplify right side
    151,389,278.54x = 17,084,140,174,914,640
  5. Step 5: Solve for x
    x = 17,084,140,174,914,640/151,389,278.54
  6. Step 6: Final answer
    x = 112,849,075.84

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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.