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Finding the Fourth Proportional to 111,478.74, 153,840.77 and 63,733.12

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Solution

The fourth proportional to 111,478.74, 153,840.77 and 63,733.12 is: 87,951.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,478.74 : 153,840.77 = 63,733.12 : x
  2. Step 2: Convert to fraction form
    111,478.74/153,840.77 = 63,733.12/x
  3. Step 3: Cross multiply
    111,478.74x = 153,840.77 × 63,733.12
  4. Step 4: Simplify right side
    111,478.74x = 9,804,752,255.30
  5. Step 5: Solve for x
    x = 9,804,752,255.30/111,478.74
  6. Step 6: Final answer
    x = 87,951.77

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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.