Home / 112,640.45-155,437.07-61,643.03

Finding the Fourth Proportional to 112,640.45, 155,437.07 and 61,643.03

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Solution

The fourth proportional to 112,640.45, 155,437.07 and 61,643.03 is: 85,063.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,640.45 : 155,437.07 = 61,643.03 : x
  2. Step 2: Convert to fraction form
    112,640.45/155,437.07 = 61,643.03/x
  3. Step 3: Cross multiply
    112,640.45x = 155,437.07 × 61,643.03
  4. Step 4: Simplify right side
    112,640.45x = 9,581,610,883.72
  5. Step 5: Solve for x
    x = 9,581,610,883.72/112,640.45
  6. Step 6: Final answer
    x = 85,063.68

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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.