Home / 112,208.40-154,737-87,048.72

Finding the Fourth Proportional to 112,208.40, 154,737 and 87,048.72

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Solution

The fourth proportional to 112,208.40, 154,737 and 87,048.72 is: 120,041.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,208.40 : 154,737 = 87,048.72 : x
  2. Step 2: Convert to fraction form
    112,208.40/154,737 = 87,048.72/x
  3. Step 3: Cross multiply
    112,208.40x = 154,737 × 87,048.72
  4. Step 4: Simplify right side
    112,208.40x = 13,469,657,786.64
  5. Step 5: Solve for x
    x = 13,469,657,786.64/112,208.40
  6. Step 6: Final answer
    x = 120,041.44

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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.