Home / 142,967.40-197,318.67-79,325.70

Finding the Fourth Proportional to 142,967.40, 197,318.67 and 79,325.70

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Solution

The fourth proportional to 142,967.40, 197,318.67 and 79,325.70 is: 109,482.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,967.40 : 197,318.67 = 79,325.70 : x
  2. Step 2: Convert to fraction form
    142,967.40/197,318.67 = 79,325.70/x
  3. Step 3: Cross multiply
    142,967.40x = 197,318.67 × 79,325.70
  4. Step 4: Simplify right side
    142,967.40x = 15,652,441,620.82
  5. Step 5: Solve for x
    x = 15,652,441,620.82/142,967.40
  6. Step 6: Final answer
    x = 109,482.59

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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.