Home / 130,564.80-195,458.40-77,947.20

Finding the Fourth Proportional to 130,564.80, 195,458.40 and 77,947.20

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Solution

The fourth proportional to 130,564.80, 195,458.40 and 77,947.20 is: 116,688.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,564.80 : 195,458.40 = 77,947.20 : x
  2. Step 2: Convert to fraction form
    130,564.80/195,458.40 = 77,947.20/x
  3. Step 3: Cross multiply
    130,564.80x = 195,458.40 × 77,947.20
  4. Step 4: Simplify right side
    130,564.80x = 15,235,434,996.48
  5. Step 5: Solve for x
    x = 15,235,434,996.48/130,564.80
  6. Step 6: Final answer
    x = 116,688.69

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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.