Home / 143,012.07-197,356.65-79,350.32

Finding the Fourth Proportional to 143,012.07, 197,356.65 and 79,350.32

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Solution

The fourth proportional to 143,012.07, 197,356.65 and 79,350.32 is: 109,503.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,012.07 : 197,356.65 = 79,350.32 : x
  2. Step 2: Convert to fraction form
    143,012.07/197,356.65 = 79,350.32/x
  3. Step 3: Cross multiply
    143,012.07x = 197,356.65 × 79,350.32
  4. Step 4: Simplify right side
    143,012.07x = 15,660,312,344.84
  5. Step 5: Solve for x
    x = 15,660,312,344.84/143,012.07
  6. Step 6: Final answer
    x = 109,503.43

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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.