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Finding the Fourth Proportional to 235,592.70, 325,120.95 and 128,165.64

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Solution

The fourth proportional to 235,592.70, 325,120.95 and 128,165.64 is: 176,870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,592.70 : 325,120.95 = 128,165.64 : x
  2. Step 2: Convert to fraction form
    235,592.70/325,120.95 = 128,165.64/x
  3. Step 3: Cross multiply
    235,592.70x = 325,120.95 × 128,165.64
  4. Step 4: Simplify right side
    235,592.70x = 41,669,334,634.16
  5. Step 5: Solve for x
    x = 41,669,334,634.16/235,592.70
  6. Step 6: Final answer
    x = 176,870.23

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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.