Home / 125,421.54-173,162.79-77,725.50

Finding the Fourth Proportional to 125,421.54, 173,162.79 and 77,725.50

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Solution

The fourth proportional to 125,421.54, 173,162.79 and 77,725.50 is: 107,311.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,421.54 : 173,162.79 = 77,725.50 : x
  2. Step 2: Convert to fraction form
    125,421.54/173,162.79 = 77,725.50/x
  3. Step 3: Cross multiply
    125,421.54x = 173,162.79 × 77,725.50
  4. Step 4: Simplify right side
    125,421.54x = 13,459,164,434.15
  5. Step 5: Solve for x
    x = 13,459,164,434.15/125,421.54
  6. Step 6: Final answer
    x = 107,311.43

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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.