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Finding the Fourth Proportional to 158,404.64, 236,950.32 and 120,679.28

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Solution

The fourth proportional to 158,404.64, 236,950.32 and 120,679.28 is: 180,518.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,404.64 : 236,950.32 = 120,679.28 : x
  2. Step 2: Convert to fraction form
    158,404.64/236,950.32 = 120,679.28/x
  3. Step 3: Cross multiply
    158,404.64x = 236,950.32 × 120,679.28
  4. Step 4: Simplify right side
    158,404.64x = 28,594,994,013.37
  5. Step 5: Solve for x
    x = 28,594,994,013.37/158,404.64
  6. Step 6: Final answer
    x = 180,518.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.