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Finding the Fourth Proportional to 118,253.56, 163,189.86 and 75,812.08

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Solution

The fourth proportional to 118,253.56, 163,189.86 and 75,812.08 is: 104,620.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,253.56 : 163,189.86 = 75,812.08 : x
  2. Step 2: Convert to fraction form
    118,253.56/163,189.86 = 75,812.08/x
  3. Step 3: Cross multiply
    118,253.56x = 163,189.86 × 75,812.08
  4. Step 4: Simplify right side
    118,253.56x = 12,371,762,721.51
  5. Step 5: Solve for x
    x = 12,371,762,721.51/118,253.56
  6. Step 6: Final answer
    x = 104,620.64

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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.