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Finding the Fourth Proportional to 112,003.64, 154,565.02 and 61,702.64

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Solution

The fourth proportional to 112,003.64, 154,565.02 and 61,702.64 is: 85,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,003.64 : 154,565.02 = 61,702.64 : x
  2. Step 2: Convert to fraction form
    112,003.64/154,565.02 = 61,702.64/x
  3. Step 3: Cross multiply
    112,003.64x = 154,565.02 × 61,702.64
  4. Step 4: Simplify right side
    112,003.64x = 9,537,069,477.14
  5. Step 5: Solve for x
    x = 9,537,069,477.14/112,003.64
  6. Step 6: Final answer
    x = 85,149.64

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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.