Home / 112,588.38-155,041.29-100,647.36

Finding the Fourth Proportional to 112,588.38, 155,041.29 and 100,647.36

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Solution

The fourth proportional to 112,588.38, 155,041.29 and 100,647.36 is: 138,597.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,588.38 : 155,041.29 = 100,647.36 : x
  2. Step 2: Convert to fraction form
    112,588.38/155,041.29 = 100,647.36/x
  3. Step 3: Cross multiply
    112,588.38x = 155,041.29 × 100,647.36
  4. Step 4: Simplify right side
    112,588.38x = 15,604,496,529.49
  5. Step 5: Solve for x
    x = 15,604,496,529.49/112,588.38
  6. Step 6: Final answer
    x = 138,597.75

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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.