Home / 142,151.15-196,169.54-77,620.84

Finding the Fourth Proportional to 142,151.15, 196,169.54 and 77,620.84

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Solution

The fourth proportional to 142,151.15, 196,169.54 and 77,620.84 is: 107,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,151.15 : 196,169.54 = 77,620.84 : x
  2. Step 2: Convert to fraction form
    142,151.15/196,169.54 = 77,620.84/x
  3. Step 3: Cross multiply
    142,151.15x = 196,169.54 × 77,620.84
  4. Step 4: Simplify right side
    142,151.15x = 15,226,843,644.55
  5. Step 5: Solve for x
    x = 15,226,843,644.55/142,151.15
  6. Step 6: Final answer
    x = 107,117.27

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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.