Home / 142,809.98-197,073.44-78,277.82

Finding the Fourth Proportional to 142,809.98, 197,073.44 and 78,277.82

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Solution

The fourth proportional to 142,809.98, 197,073.44 and 78,277.82 is: 108,021.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,809.98 : 197,073.44 = 78,277.82 : x
  2. Step 2: Convert to fraction form
    142,809.98/197,073.44 = 78,277.82/x
  3. Step 3: Cross multiply
    142,809.98x = 197,073.44 × 78,277.82
  4. Step 4: Simplify right side
    142,809.98x = 15,426,479,263.10
  5. Step 5: Solve for x
    x = 15,426,479,263.10/142,809.98
  6. Step 6: Final answer
    x = 108,021.02

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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.