Home / 123,210.21-170,056.62-77,859.39

Finding the Fourth Proportional to 123,210.21, 170,056.62 and 77,859.39

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Solution

The fourth proportional to 123,210.21, 170,056.62 and 77,859.39 is: 107,462.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,210.21 : 170,056.62 = 77,859.39 : x
  2. Step 2: Convert to fraction form
    123,210.21/170,056.62 = 77,859.39/x
  3. Step 3: Cross multiply
    123,210.21x = 170,056.62 × 77,859.39
  4. Step 4: Simplify right side
    123,210.21x = 13,240,504,698.66
  5. Step 5: Solve for x
    x = 13,240,504,698.66/123,210.21
  6. Step 6: Final answer
    x = 107,462.72

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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.