Home / 130,007.80-194,622.90-77,390.20

Finding the Fourth Proportional to 130,007.80, 194,622.90 and 77,390.20

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Solution

The fourth proportional to 130,007.80, 194,622.90 and 77,390.20 is: 115,853.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,007.80 : 194,622.90 = 77,390.20 : x
  2. Step 2: Convert to fraction form
    130,007.80/194,622.90 = 77,390.20/x
  3. Step 3: Cross multiply
    130,007.80x = 194,622.90 × 77,390.20
  4. Step 4: Simplify right side
    130,007.80x = 15,061,905,155.58
  5. Step 5: Solve for x
    x = 15,061,905,155.58/130,007.80
  6. Step 6: Final answer
    x = 115,853.86

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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.