Home / 152,711.08-210,781.38-85,664.68

Finding the Fourth Proportional to 152,711.08, 210,781.38 and 85,664.68

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Solution

The fourth proportional to 152,711.08, 210,781.38 and 85,664.68 is: 118,239.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,711.08 : 210,781.38 = 85,664.68 : x
  2. Step 2: Convert to fraction form
    152,711.08/210,781.38 = 85,664.68/x
  3. Step 3: Cross multiply
    152,711.08x = 210,781.38 × 85,664.68
  4. Step 4: Simplify right side
    152,711.08x = 18,056,519,467.66
  5. Step 5: Solve for x
    x = 18,056,519,467.66/152,711.08
  6. Step 6: Final answer
    x = 118,239.75

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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.