Home / 140,529.40-210,356.70-81,188.80

Finding the Fourth Proportional to 140,529.40, 210,356.70 and 81,188.80

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Solution

The fourth proportional to 140,529.40, 210,356.70 and 81,188.80 is: 121,530.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,529.40 : 210,356.70 = 81,188.80 : x
  2. Step 2: Convert to fraction form
    140,529.40/210,356.70 = 81,188.80/x
  3. Step 3: Cross multiply
    140,529.40x = 210,356.70 × 81,188.80
  4. Step 4: Simplify right side
    140,529.40x = 17,078,608,044.96
  5. Step 5: Solve for x
    x = 17,078,608,044.96/140,529.40
  6. Step 6: Final answer
    x = 121,530.50

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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.