Home / 142,827.84-197,082-79,169.28

Finding the Fourth Proportional to 142,827.84, 197,082 and 79,169.28

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Solution

The fourth proportional to 142,827.84, 197,082 and 79,169.28 is: 109,242.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,827.84 : 197,082 = 79,169.28 : x
  2. Step 2: Convert to fraction form
    142,827.84/197,082 = 79,169.28/x
  3. Step 3: Cross multiply
    142,827.84x = 197,082 × 79,169.28
  4. Step 4: Simplify right side
    142,827.84x = 15,602,840,040.96
  5. Step 5: Solve for x
    x = 15,602,840,040.96/142,827.84
  6. Step 6: Final answer
    x = 109,242.29

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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.