Home / 103,725.60-155,588.40-82,989.60

Finding the Fourth Proportional to 103,725.60, 155,588.40 and 82,989.60

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Solution

The fourth proportional to 103,725.60, 155,588.40 and 82,989.60 is: 124,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,725.60 : 155,588.40 = 82,989.60 : x
  2. Step 2: Convert to fraction form
    103,725.60/155,588.40 = 82,989.60/x
  3. Step 3: Cross multiply
    103,725.60x = 155,588.40 × 82,989.60
  4. Step 4: Simplify right side
    103,725.60x = 12,912,219,080.64
  5. Step 5: Solve for x
    x = 12,912,219,080.64/103,725.60
  6. Step 6: Final answer
    x = 124,484.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.