Home / 122,525.12-169,064.32-72,217.28

Finding the Fourth Proportional to 122,525.12, 169,064.32 and 72,217.28

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Solution

The fourth proportional to 122,525.12, 169,064.32 and 72,217.28 is: 99,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,525.12 : 169,064.32 = 72,217.28 : x
  2. Step 2: Convert to fraction form
    122,525.12/169,064.32 = 72,217.28/x
  3. Step 3: Cross multiply
    122,525.12x = 169,064.32 × 72,217.28
  4. Step 4: Simplify right side
    122,525.12x = 12,209,365,335.45
  5. Step 5: Solve for x
    x = 12,209,365,335.45/122,525.12
  6. Step 6: Final answer
    x = 99,647.85

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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.