Home / 130,190.81-179,656.08-72,819.05

Finding the Fourth Proportional to 130,190.81, 179,656.08 and 72,819.05

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Solution

The fourth proportional to 130,190.81, 179,656.08 and 72,819.05 is: 100,486.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,190.81 : 179,656.08 = 72,819.05 : x
  2. Step 2: Convert to fraction form
    130,190.81/179,656.08 = 72,819.05/x
  3. Step 3: Cross multiply
    130,190.81x = 179,656.08 × 72,819.05
  4. Step 4: Simplify right side
    130,190.81x = 13,082,384,174.04
  5. Step 5: Solve for x
    x = 13,082,384,174.04/130,190.81
  6. Step 6: Final answer
    x = 100,486.24

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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.