Home / 130,622.29-195,988.91-71,388.76

Finding the Fourth Proportional to 130,622.29, 195,988.91 and 71,388.76

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Solution

The fourth proportional to 130,622.29, 195,988.91 and 71,388.76 is: 107,113.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,622.29 : 195,988.91 = 71,388.76 : x
  2. Step 2: Convert to fraction form
    130,622.29/195,988.91 = 71,388.76/x
  3. Step 3: Cross multiply
    130,622.29x = 195,988.91 × 71,388.76
  4. Step 4: Simplify right side
    130,622.29x = 13,991,403,921.76
  5. Step 5: Solve for x
    x = 13,991,403,921.76/130,622.29
  6. Step 6: Final answer
    x = 107,113.45

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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.