Home / 143,259.39-197,697.06-77,847.66

Finding the Fourth Proportional to 143,259.39, 197,697.06 and 77,847.66

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Solution

The fourth proportional to 143,259.39, 197,697.06 and 77,847.66 is: 107,429.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,259.39 : 197,697.06 = 77,847.66 : x
  2. Step 2: Convert to fraction form
    143,259.39/197,697.06 = 77,847.66/x
  3. Step 3: Cross multiply
    143,259.39x = 197,697.06 × 77,847.66
  4. Step 4: Simplify right side
    143,259.39x = 15,390,253,509.88
  5. Step 5: Solve for x
    x = 15,390,253,509.88/143,259.39
  6. Step 6: Final answer
    x = 107,429.28

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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.