Home / 112,772.66-155,623.88-61,782.90

Finding the Fourth Proportional to 112,772.66, 155,623.88 and 61,782.90

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Solution

The fourth proportional to 112,772.66, 155,623.88 and 61,782.90 is: 85,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,772.66 : 155,623.88 = 61,782.90 : x
  2. Step 2: Convert to fraction form
    112,772.66/155,623.88 = 61,782.90/x
  3. Step 3: Cross multiply
    112,772.66x = 155,623.88 × 61,782.90
  4. Step 4: Simplify right side
    112,772.66x = 9,614,895,061.90
  5. Step 5: Solve for x
    x = 9,614,895,061.90/112,772.66
  6. Step 6: Final answer
    x = 85,259.10

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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.