Home / 130,528.80-195,404.40-77,911.20

Finding the Fourth Proportional to 130,528.80, 195,404.40 and 77,911.20

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Solution

The fourth proportional to 130,528.80, 195,404.40 and 77,911.20 is: 116,634.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,528.80 : 195,404.40 = 77,911.20 : x
  2. Step 2: Convert to fraction form
    130,528.80/195,404.40 = 77,911.20/x
  3. Step 3: Cross multiply
    130,528.80x = 195,404.40 × 77,911.20
  4. Step 4: Simplify right side
    130,528.80x = 15,224,191,289.28
  5. Step 5: Solve for x
    x = 15,224,191,289.28/130,528.80
  6. Step 6: Final answer
    x = 116,634.73

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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.