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Finding the Fourth Proportional to 111,373.38, 153,765.27 and 77,370.93

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Solution

The fourth proportional to 111,373.38, 153,765.27 and 77,370.93 is: 106,820.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,373.38 : 153,765.27 = 77,370.93 : x
  2. Step 2: Convert to fraction form
    111,373.38/153,765.27 = 77,370.93/x
  3. Step 3: Cross multiply
    111,373.38x = 153,765.27 × 77,370.93
  4. Step 4: Simplify right side
    111,373.38x = 11,896,961,941.60
  5. Step 5: Solve for x
    x = 11,896,961,941.60/111,373.38
  6. Step 6: Final answer
    x = 106,820.52

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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.