Home / 143,019.40-197,368.32-79,358.26

Finding the Fourth Proportional to 143,019.40, 197,368.32 and 79,358.26

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Solution

The fourth proportional to 143,019.40, 197,368.32 and 79,358.26 is: 109,515.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,019.40 : 197,368.32 = 79,358.26 : x
  2. Step 2: Convert to fraction form
    143,019.40/197,368.32 = 79,358.26/x
  3. Step 3: Cross multiply
    143,019.40x = 197,368.32 × 79,358.26
  4. Step 4: Simplify right side
    143,019.40x = 15,662,806,454.32
  5. Step 5: Solve for x
    x = 15,662,806,454.32/143,019.40
  6. Step 6: Final answer
    x = 109,515.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.