Home / 142,006.86-195,955.47-78,330.06

Finding the Fourth Proportional to 142,006.86, 195,955.47 and 78,330.06

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Solution

The fourth proportional to 142,006.86, 195,955.47 and 78,330.06 is: 108,087.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,006.86 : 195,955.47 = 78,330.06 : x
  2. Step 2: Convert to fraction form
    142,006.86/195,955.47 = 78,330.06/x
  3. Step 3: Cross multiply
    142,006.86x = 195,955.47 × 78,330.06
  4. Step 4: Simplify right side
    142,006.86x = 15,349,203,722.43
  5. Step 5: Solve for x
    x = 15,349,203,722.43/142,006.86
  6. Step 6: Final answer
    x = 108,087.76

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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.