Home / 143,880.19-198,547.37-79,360.65

Finding the Fourth Proportional to 143,880.19, 198,547.37 and 79,360.65

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Solution

The fourth proportional to 143,880.19, 198,547.37 and 79,360.65 is: 109,513.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,880.19 : 198,547.37 = 79,360.65 : x
  2. Step 2: Convert to fraction form
    143,880.19/198,547.37 = 79,360.65/x
  3. Step 3: Cross multiply
    143,880.19x = 198,547.37 × 79,360.65
  4. Step 4: Simplify right side
    143,880.19x = 15,756,848,338.99
  5. Step 5: Solve for x
    x = 15,756,848,338.99/143,880.19
  6. Step 6: Final answer
    x = 109,513.67

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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.