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Finding the Fourth Proportional to 111,280.44, 153,483.24 and 77,288.98

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Solution

The fourth proportional to 111,280.44, 153,483.24 and 77,288.98 is: 106,600.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,280.44 : 153,483.24 = 77,288.98 : x
  2. Step 2: Convert to fraction form
    111,280.44/153,483.24 = 77,288.98/x
  3. Step 3: Cross multiply
    111,280.44x = 153,483.24 × 77,288.98
  4. Step 4: Simplify right side
    111,280.44x = 11,862,563,066.70
  5. Step 5: Solve for x
    x = 11,862,563,066.70/111,280.44
  6. Step 6: Final answer
    x = 106,600.61

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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.