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Finding the Fourth Proportional to 114,150.40, 157,678.04 and 87,620.72

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Solution

The fourth proportional to 114,150.40, 157,678.04 and 87,620.72 is: 121,032.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,150.40 : 157,678.04 = 87,620.72 : x
  2. Step 2: Convert to fraction form
    114,150.40/157,678.04 = 87,620.72/x
  3. Step 3: Cross multiply
    114,150.40x = 157,678.04 × 87,620.72
  4. Step 4: Simplify right side
    114,150.40x = 13,815,863,392.99
  5. Step 5: Solve for x
    x = 13,815,863,392.99/114,150.40
  6. Step 6: Final answer
    x = 121,032.11

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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.