Home / 142,720.48-196,951.80-79,056.94

Finding the Fourth Proportional to 142,720.48, 196,951.80 and 79,056.94

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Solution

The fourth proportional to 142,720.48, 196,951.80 and 79,056.94 is: 109,097.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.48 : 196,951.80 = 79,056.94 : x
  2. Step 2: Convert to fraction form
    142,720.48/196,951.80 = 79,056.94/x
  3. Step 3: Cross multiply
    142,720.48x = 196,951.80 × 79,056.94
  4. Step 4: Simplify right side
    142,720.48x = 15,570,406,635.49
  5. Step 5: Solve for x
    x = 15,570,406,635.49/142,720.48
  6. Step 6: Final answer
    x = 109,097.21

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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.