Home / 130,576.55-180,129.30-85,281.06

Finding the Fourth Proportional to 130,576.55, 180,129.30 and 85,281.06

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Solution

The fourth proportional to 130,576.55, 180,129.30 and 85,281.06 is: 117,644.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,576.55 : 180,129.30 = 85,281.06 : x
  2. Step 2: Convert to fraction form
    130,576.55/180,129.30 = 85,281.06/x
  3. Step 3: Cross multiply
    130,576.55x = 180,129.30 × 85,281.06
  4. Step 4: Simplify right side
    130,576.55x = 15,361,617,641.06
  5. Step 5: Solve for x
    x = 15,361,617,641.06/130,576.55
  6. Step 6: Final answer
    x = 117,644.54

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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.