Home / 112,156.66-154,688.69-71,874.17

Finding the Fourth Proportional to 112,156.66, 154,688.69 and 71,874.17

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Solution

The fourth proportional to 112,156.66, 154,688.69 and 71,874.17 is: 99,130.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,156.66 : 154,688.69 = 71,874.17 : x
  2. Step 2: Convert to fraction form
    112,156.66/154,688.69 = 71,874.17/x
  3. Step 3: Cross multiply
    112,156.66x = 154,688.69 × 71,874.17
  4. Step 4: Simplify right side
    112,156.66x = 11,118,121,202.14
  5. Step 5: Solve for x
    x = 11,118,121,202.14/112,156.66
  6. Step 6: Final answer
    x = 99,130.28

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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.