Home / 122,187.12-168,611.27-71,208.15

Finding the Fourth Proportional to 122,187.12, 168,611.27 and 71,208.15

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Solution

The fourth proportional to 122,187.12, 168,611.27 and 71,208.15 is: 98,263.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,187.12 : 168,611.27 = 71,208.15 : x
  2. Step 2: Convert to fraction form
    122,187.12/168,611.27 = 71,208.15/x
  3. Step 3: Cross multiply
    122,187.12x = 168,611.27 × 71,208.15
  4. Step 4: Simplify right side
    122,187.12x = 12,006,496,249.81
  5. Step 5: Solve for x
    x = 12,006,496,249.81/122,187.12
  6. Step 6: Final answer
    x = 98,263.19

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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.