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Finding the Fourth Proportional to 112,274.86, 154,928.28 and 61,970.62

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Solution

The fourth proportional to 112,274.86, 154,928.28 and 61,970.62 is: 85,513.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,274.86 : 154,928.28 = 61,970.62 : x
  2. Step 2: Convert to fraction form
    112,274.86/154,928.28 = 61,970.62/x
  3. Step 3: Cross multiply
    112,274.86x = 154,928.28 × 61,970.62
  4. Step 4: Simplify right side
    112,274.86x = 9,601,001,567.13
  5. Step 5: Solve for x
    x = 9,601,001,567.13/112,274.86
  6. Step 6: Final answer
    x = 85,513.37

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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.