Home / 102,021.39-140,786.15-56,081.19

Finding the Fourth Proportional to 102,021.39, 140,786.15 and 56,081.19

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Solution

The fourth proportional to 102,021.39, 140,786.15 and 56,081.19 is: 77,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,021.39 : 140,786.15 = 56,081.19 : x
  2. Step 2: Convert to fraction form
    102,021.39/140,786.15 = 56,081.19/x
  3. Step 3: Cross multiply
    102,021.39x = 140,786.15 × 56,081.19
  4. Step 4: Simplify right side
    102,021.39x = 7,895,454,547.11
  5. Step 5: Solve for x
    x = 7,895,454,547.11/102,021.39
  6. Step 6: Final answer
    x = 77,390.19

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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.