Home / 112,392.28-155,112.07-61,412.75

Finding the Fourth Proportional to 112,392.28, 155,112.07 and 61,412.75

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Solution

The fourth proportional to 112,392.28, 155,112.07 and 61,412.75 is: 84,755.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,392.28 : 155,112.07 = 61,412.75 : x
  2. Step 2: Convert to fraction form
    112,392.28/155,112.07 = 61,412.75/x
  3. Step 3: Cross multiply
    112,392.28x = 155,112.07 × 61,412.75
  4. Step 4: Simplify right side
    112,392.28x = 9,525,859,011.14
  5. Step 5: Solve for x
    x = 9,525,859,011.14/112,392.28
  6. Step 6: Final answer
    x = 84,755.46

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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.