Home / 143,041.06-197,390.01-79,378.30

Finding the Fourth Proportional to 143,041.06, 197,390.01 and 79,378.30

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Solution

The fourth proportional to 143,041.06, 197,390.01 and 79,378.30 is: 109,538.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,041.06 : 197,390.01 = 79,378.30 : x
  2. Step 2: Convert to fraction form
    143,041.06/197,390.01 = 79,378.30/x
  3. Step 3: Cross multiply
    143,041.06x = 197,390.01 × 79,378.30
  4. Step 4: Simplify right side
    143,041.06x = 15,668,483,430.78
  5. Step 5: Solve for x
    x = 15,668,483,430.78/143,041.06
  6. Step 6: Final answer
    x = 109,538.36

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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.