Home / 143,127.71-197,522.40-79,465.50

Finding the Fourth Proportional to 143,127.71, 197,522.40 and 79,465.50

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Solution

The fourth proportional to 143,127.71, 197,522.40 and 79,465.50 is: 109,665.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,127.71 : 197,522.40 = 79,465.50 : x
  2. Step 2: Convert to fraction form
    143,127.71/197,522.40 = 79,465.50/x
  3. Step 3: Cross multiply
    143,127.71x = 197,522.40 × 79,465.50
  4. Step 4: Simplify right side
    143,127.71x = 15,696,216,277.20
  5. Step 5: Solve for x
    x = 15,696,216,277.20/143,127.71
  6. Step 6: Final answer
    x = 109,665.81

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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.