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Finding the Fourth Proportional to 118,725.48, 163,840.50 and 65,009.52

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Solution

The fourth proportional to 118,725.48, 163,840.50 and 65,009.52 is: 89,712.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,725.48 : 163,840.50 = 65,009.52 : x
  2. Step 2: Convert to fraction form
    118,725.48/163,840.50 = 65,009.52/x
  3. Step 3: Cross multiply
    118,725.48x = 163,840.50 × 65,009.52
  4. Step 4: Simplify right side
    118,725.48x = 10,651,192,261.56
  5. Step 5: Solve for x
    x = 10,651,192,261.56/118,725.48
  6. Step 6: Final answer
    x = 89,712.77

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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.