Home / 125,820.18-173,636.64-72,115.56

Finding the Fourth Proportional to 125,820.18, 173,636.64 and 72,115.56

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Solution

The fourth proportional to 125,820.18, 173,636.64 and 72,115.56 is: 99,522.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,820.18 : 173,636.64 = 72,115.56 : x
  2. Step 2: Convert to fraction form
    125,820.18/173,636.64 = 72,115.56/x
  3. Step 3: Cross multiply
    125,820.18x = 173,636.64 × 72,115.56
  4. Step 4: Simplify right side
    125,820.18x = 12,521,903,530.12
  5. Step 5: Solve for x
    x = 12,521,903,530.12/125,820.18
  6. Step 6: Final answer
    x = 99,522.22

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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.