Home / 154,187.46-212,775.93-87,118.02

Finding the Fourth Proportional to 154,187.46, 212,775.93 and 87,118.02

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Solution

The fourth proportional to 154,187.46, 212,775.93 and 87,118.02 is: 120,221.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,187.46 : 212,775.93 = 87,118.02 : x
  2. Step 2: Convert to fraction form
    154,187.46/212,775.93 = 87,118.02/x
  3. Step 3: Cross multiply
    154,187.46x = 212,775.93 × 87,118.02
  4. Step 4: Simplify right side
    154,187.46x = 18,536,617,725.26
  5. Step 5: Solve for x
    x = 18,536,617,725.26/154,187.46
  6. Step 6: Final answer
    x = 120,221.31

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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.