Home / 115,717.07-159,682.02-64,720.95

Finding the Fourth Proportional to 115,717.07, 159,682.02 and 64,720.95

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Solution

The fourth proportional to 115,717.07, 159,682.02 and 64,720.95 is: 89,310.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,717.07 : 159,682.02 = 64,720.95 : x
  2. Step 2: Convert to fraction form
    115,717.07/159,682.02 = 64,720.95/x
  3. Step 3: Cross multiply
    115,717.07x = 159,682.02 × 64,720.95
  4. Step 4: Simplify right side
    115,717.07x = 10,334,772,032.32
  5. Step 5: Solve for x
    x = 10,334,772,032.32/115,717.07
  6. Step 6: Final answer
    x = 89,310.70

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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.