Home / 122,561.84-169,109.10-71,551.40

Finding the Fourth Proportional to 122,561.84, 169,109.10 and 71,551.40

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Solution

The fourth proportional to 122,561.84, 169,109.10 and 71,551.40 is: 98,725.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,561.84 : 169,109.10 = 71,551.40 : x
  2. Step 2: Convert to fraction form
    122,561.84/169,109.10 = 71,551.40/x
  3. Step 3: Cross multiply
    122,561.84x = 169,109.10 × 71,551.40
  4. Step 4: Simplify right side
    122,561.84x = 12,099,992,857.74
  5. Step 5: Solve for x
    x = 12,099,992,857.74/122,561.84
  6. Step 6: Final answer
    x = 98,725.61

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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.