Home / 143,015.40-197,362.80-79,354.26

Finding the Fourth Proportional to 143,015.40, 197,362.80 and 79,354.26

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Solution

The fourth proportional to 143,015.40, 197,362.80 and 79,354.26 is: 109,509.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,015.40 : 197,362.80 = 79,354.26 : x
  2. Step 2: Convert to fraction form
    143,015.40/197,362.80 = 79,354.26/x
  3. Step 3: Cross multiply
    143,015.40x = 197,362.80 × 79,354.26
  4. Step 4: Simplify right side
    143,015.40x = 15,661,578,945.53
  5. Step 5: Solve for x
    x = 15,661,578,945.53/143,015.40
  6. Step 6: Final answer
    x = 109,509.74

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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.