Home / 143,143.47-197,544.02-79,487.19

Finding the Fourth Proportional to 143,143.47, 197,544.02 and 79,487.19

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Solution

The fourth proportional to 143,143.47, 197,544.02 and 79,487.19 is: 109,695.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,143.47 : 197,544.02 = 79,487.19 : x
  2. Step 2: Convert to fraction form
    143,143.47/197,544.02 = 79,487.19/x
  3. Step 3: Cross multiply
    143,143.47x = 197,544.02 × 79,487.19
  4. Step 4: Simplify right side
    143,143.47x = 15,702,218,653.67
  5. Step 5: Solve for x
    x = 15,702,218,653.67/143,143.47
  6. Step 6: Final answer
    x = 109,695.67

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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.