Home / 102,162.09-140,980.13-56,217.43

Finding the Fourth Proportional to 102,162.09, 140,980.13 and 56,217.43

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Solution

The fourth proportional to 102,162.09, 140,980.13 and 56,217.43 is: 77,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,162.09 : 140,980.13 = 56,217.43 : x
  2. Step 2: Convert to fraction form
    102,162.09/140,980.13 = 56,217.43/x
  3. Step 3: Cross multiply
    102,162.09x = 140,980.13 × 56,217.43
  4. Step 4: Simplify right side
    102,162.09x = 7,925,540,661.03
  5. Step 5: Solve for x
    x = 7,925,540,661.03/102,162.09
  6. Step 6: Final answer
    x = 77,578.10

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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.