Home / 142,938.15-197,266.76-79,296.45

Finding the Fourth Proportional to 142,938.15, 197,266.76 and 79,296.45

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Solution

The fourth proportional to 142,938.15, 197,266.76 and 79,296.45 is: 109,435.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,938.15 : 197,266.76 = 79,296.45 : x
  2. Step 2: Convert to fraction form
    142,938.15/197,266.76 = 79,296.45/x
  3. Step 3: Cross multiply
    142,938.15x = 197,266.76 × 79,296.45
  4. Step 4: Simplify right side
    142,938.15x = 15,642,553,771.00
  5. Step 5: Solve for x
    x = 15,642,553,771.00/142,938.15
  6. Step 6: Final answer
    x = 109,435.82

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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.