Home / 143,275.17-197,715.81-79,611.33

Finding the Fourth Proportional to 143,275.17, 197,715.81 and 79,611.33

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Solution

The fourth proportional to 143,275.17, 197,715.81 and 79,611.33 is: 109,861.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,275.17 : 197,715.81 = 79,611.33 : x
  2. Step 2: Convert to fraction form
    143,275.17/197,715.81 = 79,611.33/x
  3. Step 3: Cross multiply
    143,275.17x = 197,715.81 × 79,611.33
  4. Step 4: Simplify right side
    143,275.17x = 15,740,418,596.13
  5. Step 5: Solve for x
    x = 15,740,418,596.13/143,275.17
  6. Step 6: Final answer
    x = 109,861.45

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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.