Home / 130,415.80-195,696.38-70,443.06

Finding the Fourth Proportional to 130,415.80, 195,696.38 and 70,443.06

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Solution

The fourth proportional to 130,415.80, 195,696.38 and 70,443.06 is: 105,703.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,415.80 : 195,696.38 = 70,443.06 : x
  2. Step 2: Convert to fraction form
    130,415.80/195,696.38 = 70,443.06/x
  3. Step 3: Cross multiply
    130,415.80x = 195,696.38 × 70,443.06
  4. Step 4: Simplify right side
    130,415.80x = 13,785,451,838.12
  5. Step 5: Solve for x
    x = 13,785,451,838.12/130,415.80
  6. Step 6: Final answer
    x = 105,703.85

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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.