Home / 112,386.66-155,087.37-64,640.81

Finding the Fourth Proportional to 112,386.66, 155,087.37 and 64,640.81

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Solution

The fourth proportional to 112,386.66, 155,087.37 and 64,640.81 is: 89,200.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,386.66 : 155,087.37 = 64,640.81 : x
  2. Step 2: Convert to fraction form
    112,386.66/155,087.37 = 64,640.81/x
  3. Step 3: Cross multiply
    112,386.66x = 155,087.37 × 64,640.81
  4. Step 4: Simplify right side
    112,386.66x = 10,024,972,442.13
  5. Step 5: Solve for x
    x = 10,024,972,442.13/112,386.66
  6. Step 6: Final answer
    x = 89,200.73

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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.