Home / 142,259.70-196,316.08-77,727.55

Finding the Fourth Proportional to 142,259.70, 196,316.08 and 77,727.55

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Solution

The fourth proportional to 142,259.70, 196,316.08 and 77,727.55 is: 107,262.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,259.70 : 196,316.08 = 77,727.55 : x
  2. Step 2: Convert to fraction form
    142,259.70/196,316.08 = 77,727.55/x
  3. Step 3: Cross multiply
    142,259.70x = 196,316.08 × 77,727.55
  4. Step 4: Simplify right side
    142,259.70x = 15,259,167,924.00
  5. Step 5: Solve for x
    x = 15,259,167,924.00/142,259.70
  6. Step 6: Final answer
    x = 107,262.76

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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.