Home / 142,983.96-197,341.47-79,342.26

Finding the Fourth Proportional to 142,983.96, 197,341.47 and 79,342.26

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Solution

The fourth proportional to 142,983.96, 197,341.47 and 79,342.26 is: 109,505.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,983.96 : 197,341.47 = 79,342.26 : x
  2. Step 2: Convert to fraction form
    142,983.96/197,341.47 = 79,342.26/x
  3. Step 3: Cross multiply
    142,983.96x = 197,341.47 × 79,342.26
  4. Step 4: Simplify right side
    142,983.96x = 15,657,518,221.52
  5. Step 5: Solve for x
    x = 15,657,518,221.52/142,983.96
  6. Step 6: Final answer
    x = 109,505.42

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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.