Home / 112,644.52-155,283.78-85,740.16

Finding the Fourth Proportional to 112,644.52, 155,283.78 and 85,740.16

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Solution

The fourth proportional to 112,644.52, 155,283.78 and 85,740.16 is: 118,195.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,644.52 : 155,283.78 = 85,740.16 : x
  2. Step 2: Convert to fraction form
    112,644.52/155,283.78 = 85,740.16/x
  3. Step 3: Cross multiply
    112,644.52x = 155,283.78 × 85,740.16
  4. Step 4: Simplify right side
    112,644.52x = 13,314,056,142.60
  5. Step 5: Solve for x
    x = 13,314,056,142.60/112,644.52
  6. Step 6: Final answer
    x = 118,195.33

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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.