Home / 143,130.46-197,526.20-79,468.26

Finding the Fourth Proportional to 143,130.46, 197,526.20 and 79,468.26

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Solution

The fourth proportional to 143,130.46, 197,526.20 and 79,468.26 is: 109,669.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,130.46 : 197,526.20 = 79,468.26 : x
  2. Step 2: Convert to fraction form
    143,130.46/197,526.20 = 79,468.26/x
  3. Step 3: Cross multiply
    143,130.46x = 197,526.20 × 79,468.26
  4. Step 4: Simplify right side
    143,130.46x = 15,697,063,418.41
  5. Step 5: Solve for x
    x = 15,697,063,418.41/143,130.46
  6. Step 6: Final answer
    x = 109,669.62

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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.