Home / 100,847.05-139,107.55-62,091.13

Finding the Fourth Proportional to 100,847.05, 139,107.55 and 62,091.13

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Solution

The fourth proportional to 100,847.05, 139,107.55 and 62,091.13 is: 85,647.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,847.05 : 139,107.55 = 62,091.13 : x
  2. Step 2: Convert to fraction form
    100,847.05/139,107.55 = 62,091.13/x
  3. Step 3: Cross multiply
    100,847.05x = 139,107.55 × 62,091.13
  4. Step 4: Simplify right side
    100,847.05x = 8,637,345,411.15
  5. Step 5: Solve for x
    x = 8,637,345,411.15/100,847.05
  6. Step 6: Final answer
    x = 85,647.97

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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.