Home / 143,709.36-198,303.75-83,298.95

Finding the Fourth Proportional to 143,709.36, 198,303.75 and 83,298.95

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Solution

The fourth proportional to 143,709.36, 198,303.75 and 83,298.95 is: 114,943.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,709.36 : 198,303.75 = 83,298.95 : x
  2. Step 2: Convert to fraction form
    143,709.36/198,303.75 = 83,298.95/x
  3. Step 3: Cross multiply
    143,709.36x = 198,303.75 × 83,298.95
  4. Step 4: Simplify right side
    143,709.36x = 16,518,494,156.06
  5. Step 5: Solve for x
    x = 16,518,494,156.06/143,709.36
  6. Step 6: Final answer
    x = 114,943.76

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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.