Home / 142,900.55-197,211.47-79,238.33

Finding the Fourth Proportional to 142,900.55, 197,211.47 and 79,238.33

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Solution

The fourth proportional to 142,900.55, 197,211.47 and 79,238.33 is: 109,353.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,900.55 : 197,211.47 = 79,238.33 : x
  2. Step 2: Convert to fraction form
    142,900.55/197,211.47 = 79,238.33/x
  3. Step 3: Cross multiply
    142,900.55x = 197,211.47 × 79,238.33
  4. Step 4: Simplify right side
    142,900.55x = 15,626,706,157.40
  5. Step 5: Solve for x
    x = 15,626,706,157.40/142,900.55
  6. Step 6: Final answer
    x = 109,353.72

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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.