Home / 143,318.52-197,798.22-86,730.84

Finding the Fourth Proportional to 143,318.52, 197,798.22 and 86,730.84

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Solution

The fourth proportional to 143,318.52, 197,798.22 and 86,730.84 is: 119,699.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,318.52 : 197,798.22 = 86,730.84 : x
  2. Step 2: Convert to fraction form
    143,318.52/197,798.22 = 86,730.84/x
  3. Step 3: Cross multiply
    143,318.52x = 197,798.22 × 86,730.84
  4. Step 4: Simplify right side
    143,318.52x = 17,155,205,771.10
  5. Step 5: Solve for x
    x = 17,155,205,771.10/143,318.52
  6. Step 6: Final answer
    x = 119,699.85

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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.