Home / 143,583.64-198,145.40-79,920.08

Finding the Fourth Proportional to 143,583.64, 198,145.40 and 79,920.08

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Solution

The fourth proportional to 143,583.64, 198,145.40 and 79,920.08 is: 110,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,583.64 : 198,145.40 = 79,920.08 : x
  2. Step 2: Convert to fraction form
    143,583.64/198,145.40 = 79,920.08/x
  3. Step 3: Cross multiply
    143,583.64x = 198,145.40 × 79,920.08
  4. Step 4: Simplify right side
    143,583.64x = 15,835,796,219.63
  5. Step 5: Solve for x
    x = 15,835,796,219.63/143,583.64
  6. Step 6: Final answer
    x = 110,289.70

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1.5x scale

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.