Home / 143,285.52-197,752.20-86,697.36

Finding the Fourth Proportional to 143,285.52, 197,752.20 and 86,697.36

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Solution

The fourth proportional to 143,285.52, 197,752.20 and 86,697.36 is: 119,653.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,285.52 : 197,752.20 = 86,697.36 : x
  2. Step 2: Convert to fraction form
    143,285.52/197,752.20 = 86,697.36/x
  3. Step 3: Cross multiply
    143,285.52x = 197,752.20 × 86,697.36
  4. Step 4: Simplify right side
    143,285.52x = 17,144,593,674.19
  5. Step 5: Solve for x
    x = 17,144,593,674.19/143,285.52
  6. Step 6: Final answer
    x = 119,653.36

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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.