Home / 143,130.70-197,526.53-79,468.50

Finding the Fourth Proportional to 143,130.70, 197,526.53 and 79,468.50

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Solution

The fourth proportional to 143,130.70, 197,526.53 and 79,468.50 is: 109,669.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,130.70 : 197,526.53 = 79,468.50 : x
  2. Step 2: Convert to fraction form
    143,130.70/197,526.53 = 79,468.50/x
  3. Step 3: Cross multiply
    143,130.70x = 197,526.53 × 79,468.50
  4. Step 4: Simplify right side
    143,130.70x = 15,697,137,049.31
  5. Step 5: Solve for x
    x = 15,697,137,049.31/143,130.70
  6. Step 6: Final answer
    x = 109,669.95

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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.