Home / 142,775.90-197,030.55-79,117.82

Finding the Fourth Proportional to 142,775.90, 197,030.55 and 79,117.82

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Solution

The fourth proportional to 142,775.90, 197,030.55 and 79,117.82 is: 109,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,775.90 : 197,030.55 = 79,117.82 : x
  2. Step 2: Convert to fraction form
    142,775.90/197,030.55 = 79,117.82/x
  3. Step 3: Cross multiply
    142,775.90x = 197,030.55 × 79,117.82
  4. Step 4: Simplify right side
    142,775.90x = 15,588,627,589.40
  5. Step 5: Solve for x
    x = 15,588,627,589.40/142,775.90
  6. Step 6: Final answer
    x = 109,182.49

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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.