Home / 112,683.30-155,504.79-61,695.20

Finding the Fourth Proportional to 112,683.30, 155,504.79 and 61,695.20

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Solution

The fourth proportional to 112,683.30, 155,504.79 and 61,695.20 is: 85,140.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,683.30 : 155,504.79 = 61,695.20 : x
  2. Step 2: Convert to fraction form
    112,683.30/155,504.79 = 61,695.20/x
  3. Step 3: Cross multiply
    112,683.30x = 155,504.79 × 61,695.20
  4. Step 4: Simplify right side
    112,683.30x = 9,593,898,342.48
  5. Step 5: Solve for x
    x = 9,593,898,342.48/112,683.30
  6. Step 6: Final answer
    x = 85,140.37

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1.5x scale

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.