Home / 140,509.40-210,326.70-81,168.80

Finding the Fourth Proportional to 140,509.40, 210,326.70 and 81,168.80

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Solution

The fourth proportional to 140,509.40, 210,326.70 and 81,168.80 is: 121,500.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,509.40 : 210,326.70 = 81,168.80 : x
  2. Step 2: Convert to fraction form
    140,509.40/210,326.70 = 81,168.80/x
  3. Step 3: Cross multiply
    140,509.40x = 210,326.70 × 81,168.80
  4. Step 4: Simplify right side
    140,509.40x = 17,071,965,846.96
  5. Step 5: Solve for x
    x = 17,071,965,846.96/140,509.40
  6. Step 6: Final answer
    x = 121,500.52

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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.