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Finding the Fourth Proportional to 125,643.32, 173,363.04 and 74,671.64

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Solution

The fourth proportional to 125,643.32, 173,363.04 and 74,671.64 is: 103,032.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,643.32 : 173,363.04 = 74,671.64 : x
  2. Step 2: Convert to fraction form
    125,643.32/173,363.04 = 74,671.64/x
  3. Step 3: Cross multiply
    125,643.32x = 173,363.04 × 74,671.64
  4. Step 4: Simplify right side
    125,643.32x = 12,945,302,512.19
  5. Step 5: Solve for x
    x = 12,945,302,512.19/125,643.32
  6. Step 6: Final answer
    x = 103,032.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.