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Finding the Fourth Proportional to 235,531.70, 325,035.24 and 128,102.50

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Solution

The fourth proportional to 235,531.70, 325,035.24 and 128,102.50 is: 176,782.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,531.70 : 325,035.24 = 128,102.50 : x
  2. Step 2: Convert to fraction form
    235,531.70/325,035.24 = 128,102.50/x
  3. Step 3: Cross multiply
    235,531.70x = 325,035.24 × 128,102.50
  4. Step 4: Simplify right side
    235,531.70x = 41,637,826,832.10
  5. Step 5: Solve for x
    x = 41,637,826,832.10/235,531.70
  6. Step 6: Final answer
    x = 176,782.26

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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.