Home / 115,918,215.32-159,963,755.10-66,356,946.20

Finding the Fourth Proportional to 115,918,215.32, 159,963,755.10 and 66,356,946.20

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Solution

The fourth proportional to 115,918,215.32, 159,963,755.10 and 66,356,946.20 is: 91,570,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,918,215.32 : 159,963,755.10 = 66,356,946.20 : x
  2. Step 2: Convert to fraction form
    115,918,215.32/159,963,755.10 = 66,356,946.20/x
  3. Step 3: Cross multiply
    115,918,215.32x = 159,963,755.10 × 66,356,946.20
  4. Step 4: Simplify right side
    115,918,215.32x = 10,614,706,291,120,676
  5. Step 5: Solve for x
    x = 10,614,706,291,120,676/115,918,215.32
  6. Step 6: Final answer
    x = 91,570,649.72

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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.