Home / 112,810.83-155,637.75-67,490.11

Finding the Fourth Proportional to 112,810.83, 155,637.75 and 67,490.11

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Solution

The fourth proportional to 112,810.83, 155,637.75 and 67,490.11 is: 93,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,810.83 : 155,637.75 = 67,490.11 : x
  2. Step 2: Convert to fraction form
    112,810.83/155,637.75 = 67,490.11/x
  3. Step 3: Cross multiply
    112,810.83x = 155,637.75 × 67,490.11
  4. Step 4: Simplify right side
    112,810.83x = 10,504,008,867.65
  5. Step 5: Solve for x
    x = 10,504,008,867.65/112,810.83
  6. Step 6: Final answer
    x = 93,111.71

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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.