Home / 130,751.28-180,410.04-74,147.76

Finding the Fourth Proportional to 130,751.28, 180,410.04 and 74,147.76

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Solution

The fourth proportional to 130,751.28, 180,410.04 and 74,147.76 is: 102,308.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,751.28 : 180,410.04 = 74,147.76 : x
  2. Step 2: Convert to fraction form
    130,751.28/180,410.04 = 74,147.76/x
  3. Step 3: Cross multiply
    130,751.28x = 180,410.04 × 74,147.76
  4. Step 4: Simplify right side
    130,751.28x = 13,377,000,347.51
  5. Step 5: Solve for x
    x = 13,377,000,347.51/130,751.28
  6. Step 6: Final answer
    x = 102,308.75

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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.