Home / 143,807.16-198,505.98-87,217.32

Finding the Fourth Proportional to 143,807.16, 198,505.98 and 87,217.32

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Solution

The fourth proportional to 143,807.16, 198,505.98 and 87,217.32 is: 120,391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,807.16 : 198,505.98 = 87,217.32 : x
  2. Step 2: Convert to fraction form
    143,807.16/198,505.98 = 87,217.32/x
  3. Step 3: Cross multiply
    143,807.16x = 198,505.98 × 87,217.32
  4. Step 4: Simplify right side
    143,807.16x = 17,313,159,579.57
  5. Step 5: Solve for x
    x = 17,313,159,579.57/143,807.16
  6. Step 6: Final answer
    x = 120,391.50

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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.