Home / 130,722.12-180,355.38-74,122.56

Finding the Fourth Proportional to 130,722.12, 180,355.38 and 74,122.56

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Solution

The fourth proportional to 130,722.12, 180,355.38 and 74,122.56 is: 102,265.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,722.12 : 180,355.38 = 74,122.56 : x
  2. Step 2: Convert to fraction form
    130,722.12/180,355.38 = 74,122.56/x
  3. Step 3: Cross multiply
    130,722.12x = 180,355.38 × 74,122.56
  4. Step 4: Simplify right side
    130,722.12x = 13,368,402,475.37
  5. Step 5: Solve for x
    x = 13,368,402,475.37/130,722.12
  6. Step 6: Final answer
    x = 102,265.80

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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.