Home / 142,119.72-196,122.04-77,586.47

Finding the Fourth Proportional to 142,119.72, 196,122.04 and 77,586.47

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Solution

The fourth proportional to 142,119.72, 196,122.04 and 77,586.47 is: 107,067.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,119.72 : 196,122.04 = 77,586.47 : x
  2. Step 2: Convert to fraction form
    142,119.72/196,122.04 = 77,586.47/x
  3. Step 3: Cross multiply
    142,119.72x = 196,122.04 × 77,586.47
  4. Step 4: Simplify right side
    142,119.72x = 15,216,417,748.27
  5. Step 5: Solve for x
    x = 15,216,417,748.27/142,119.72
  6. Step 6: Final answer
    x = 107,067.60

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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.