Home / 142,814.02-197,089.74-79,147.70

Finding the Fourth Proportional to 142,814.02, 197,089.74 and 79,147.70

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Solution

The fourth proportional to 142,814.02, 197,089.74 and 79,147.70 is: 109,227.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,814.02 : 197,089.74 = 79,147.70 : x
  2. Step 2: Convert to fraction form
    142,814.02/197,089.74 = 79,147.70/x
  3. Step 3: Cross multiply
    142,814.02x = 197,089.74 × 79,147.70
  4. Step 4: Simplify right side
    142,814.02x = 15,599,199,614.60
  5. Step 5: Solve for x
    x = 15,599,199,614.60/142,814.02
  6. Step 6: Final answer
    x = 109,227.37

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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.