Home / 151,389,274.21-208,917,282.38-81,774,655.47

Finding the Fourth Proportional to 151,389,274.21, 208,917,282.38 and 81,774,655.47

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Solution

The fourth proportional to 151,389,274.21, 208,917,282.38 and 81,774,655.47 is: 112,849,069.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,389,274.21 : 208,917,282.38 = 81,774,655.47 : x
  2. Step 2: Convert to fraction form
    151,389,274.21/208,917,282.38 = 81,774,655.47/x
  3. Step 3: Cross multiply
    151,389,274.21x = 208,917,282.38 × 81,774,655.47
  4. Step 4: Simplify right side
    151,389,274.21x = 17,084,138,787,944,328
  5. Step 5: Solve for x
    x = 17,084,138,787,944,328/151,389,274.21
  6. Step 6: Final answer
    x = 112,849,069.91

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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.