Home / 130,790.38-196,135.77-77,497.40

Finding the Fourth Proportional to 130,790.38, 196,135.77 and 77,497.40

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Solution

The fourth proportional to 130,790.38, 196,135.77 and 77,497.40 is: 116,216.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,790.38 : 196,135.77 = 77,497.40 : x
  2. Step 2: Convert to fraction form
    130,790.38/196,135.77 = 77,497.40/x
  3. Step 3: Cross multiply
    130,790.38x = 196,135.77 × 77,497.40
  4. Step 4: Simplify right side
    130,790.38x = 15,200,012,222.00
  5. Step 5: Solve for x
    x = 15,200,012,222.00/130,790.38
  6. Step 6: Final answer
    x = 116,216.59

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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.