Home / 112,369.12-155,100.66-64,637.84

Finding the Fourth Proportional to 112,369.12, 155,100.66 and 64,637.84

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Solution

The fourth proportional to 112,369.12, 155,100.66 and 64,637.84 is: 89,218.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,369.12 : 155,100.66 = 64,637.84 : x
  2. Step 2: Convert to fraction form
    112,369.12/155,100.66 = 64,637.84/x
  3. Step 3: Cross multiply
    112,369.12x = 155,100.66 × 64,637.84
  4. Step 4: Simplify right side
    112,369.12x = 10,025,371,790.33
  5. Step 5: Solve for x
    x = 10,025,371,790.33/112,369.12
  6. Step 6: Final answer
    x = 89,218.21

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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.