Home / 105,725.40-158,588.10-80,842.20

Finding the Fourth Proportional to 105,725.40, 158,588.10 and 80,842.20

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Solution

The fourth proportional to 105,725.40, 158,588.10 and 80,842.20 is: 121,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,725.40 : 158,588.10 = 80,842.20 : x
  2. Step 2: Convert to fraction form
    105,725.40/158,588.10 = 80,842.20/x
  3. Step 3: Cross multiply
    105,725.40x = 158,588.10 × 80,842.20
  4. Step 4: Simplify right side
    105,725.40x = 12,820,610,897.82
  5. Step 5: Solve for x
    x = 12,820,610,897.82/105,725.40
  6. Step 6: Final answer
    x = 121,263.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.