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Finding the Fourth Proportional to 118,240, 163,174.65 and 64,528.46

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Solution

The fourth proportional to 118,240, 163,174.65 and 64,528.46 is: 89,051.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,240 : 163,174.65 = 64,528.46 : x
  2. Step 2: Convert to fraction form
    118,240/163,174.65 = 64,528.46/x
  3. Step 3: Cross multiply
    118,240x = 163,174.65 × 64,528.46
  4. Step 4: Simplify right side
    118,240x = 10,529,408,875.54
  5. Step 5: Solve for x
    x = 10,529,408,875.54/118,240
  6. Step 6: Final answer
    x = 89,051.16

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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.