Home / 143,055.32-197,419.58-79,397.21

Finding the Fourth Proportional to 143,055.32, 197,419.58 and 79,397.21

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Solution

The fourth proportional to 143,055.32, 197,419.58 and 79,397.21 is: 109,569.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,055.32 : 197,419.58 = 79,397.21 : x
  2. Step 2: Convert to fraction form
    143,055.32/197,419.58 = 79,397.21/x
  3. Step 3: Cross multiply
    143,055.32x = 197,419.58 × 79,397.21
  4. Step 4: Simplify right side
    143,055.32x = 15,674,564,245.67
  5. Step 5: Solve for x
    x = 15,674,564,245.67/143,055.32
  6. Step 6: Final answer
    x = 109,569.95

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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.