Home / 143,436.51-197,937.11-79,778.40

Finding the Fourth Proportional to 143,436.51, 197,937.11 and 79,778.40

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Solution

The fourth proportional to 143,436.51, 197,937.11 and 79,778.40 is: 110,091.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,436.51 : 197,937.11 = 79,778.40 : x
  2. Step 2: Convert to fraction form
    143,436.51/197,937.11 = 79,778.40/x
  3. Step 3: Cross multiply
    143,436.51x = 197,937.11 × 79,778.40
  4. Step 4: Simplify right side
    143,436.51x = 15,791,105,537.53
  5. Step 5: Solve for x
    x = 15,791,105,537.53/143,436.51
  6. Step 6: Final answer
    x = 110,091.26

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1.5x scale

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.