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Finding the Fourth Proportional to 125,410.72, 173,068.16 and 68,824.32

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Solution

The fourth proportional to 125,410.72, 173,068.16 and 68,824.32 is: 94,978.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,410.72 : 173,068.16 = 68,824.32 : x
  2. Step 2: Convert to fraction form
    125,410.72/173,068.16 = 68,824.32/x
  3. Step 3: Cross multiply
    125,410.72x = 173,068.16 × 68,824.32
  4. Step 4: Simplify right side
    125,410.72x = 11,911,298,425.65
  5. Step 5: Solve for x
    x = 11,911,298,425.65/125,410.72
  6. Step 6: Final answer
    x = 94,978.31

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1.5x scale

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.