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Finding the Fourth Proportional to 134,603.78, 185,752.83 and 74,174.40

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Solution

The fourth proportional to 134,603.78, 185,752.83 and 74,174.40 is: 102,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,603.78 : 185,752.83 = 74,174.40 : x
  2. Step 2: Convert to fraction form
    134,603.78/185,752.83 = 74,174.40/x
  3. Step 3: Cross multiply
    134,603.78x = 185,752.83 × 74,174.40
  4. Step 4: Simplify right side
    134,603.78x = 13,778,104,809.84
  5. Step 5: Solve for x
    x = 13,778,104,809.84/134,603.78
  6. Step 6: Final answer
    x = 102,360.46

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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.