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Finding the Fourth Proportional to 111,490.83, 153,868.14 and 63,735.12

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Solution

The fourth proportional to 111,490.83, 153,868.14 and 63,735.12 is: 87,960.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,490.83 : 153,868.14 = 63,735.12 : x
  2. Step 2: Convert to fraction form
    111,490.83/153,868.14 = 63,735.12/x
  3. Step 3: Cross multiply
    111,490.83x = 153,868.14 × 63,735.12
  4. Step 4: Simplify right side
    111,490.83x = 9,806,804,367.08
  5. Step 5: Solve for x
    x = 9,806,804,367.08/111,490.83
  6. Step 6: Final answer
    x = 87,960.64

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1.5x scale

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.