Home / 103,018.51-155,229.77-84,708.73

Finding the Fourth Proportional to 103,018.51, 155,229.77 and 84,708.73

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Solution

The fourth proportional to 103,018.51, 155,229.77 and 84,708.73 is: 127,640.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,018.51 : 155,229.77 = 84,708.73 : x
  2. Step 2: Convert to fraction form
    103,018.51/155,229.77 = 84,708.73/x
  3. Step 3: Cross multiply
    103,018.51x = 155,229.77 × 84,708.73
  4. Step 4: Simplify right side
    103,018.51x = 13,149,316,674.89
  5. Step 5: Solve for x
    x = 13,149,316,674.89/103,018.51
  6. Step 6: Final answer
    x = 127,640.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.