Home / 143,574.87-198,307.44-105,279.15

Finding the Fourth Proportional to 143,574.87, 198,307.44 and 105,279.15

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Solution

The fourth proportional to 143,574.87, 198,307.44 and 105,279.15 is: 145,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,574.87 : 198,307.44 = 105,279.15 : x
  2. Step 2: Convert to fraction form
    143,574.87/198,307.44 = 105,279.15/x
  3. Step 3: Cross multiply
    143,574.87x = 198,307.44 × 105,279.15
  4. Step 4: Simplify right side
    143,574.87x = 20,877,638,721.88
  5. Step 5: Solve for x
    x = 20,877,638,721.88/143,574.87
  6. Step 6: Final answer
    x = 145,412.90

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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.