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Finding the Fourth Proportional to 118,420.40, 163,420.20 and 63,972.59

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Solution

The fourth proportional to 118,420.40, 163,420.20 and 63,972.59 is: 88,282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,420.40 : 163,420.20 = 63,972.59 : x
  2. Step 2: Convert to fraction form
    118,420.40/163,420.20 = 63,972.59/x
  3. Step 3: Cross multiply
    118,420.40x = 163,420.20 × 63,972.59
  4. Step 4: Simplify right side
    118,420.40x = 10,454,413,452.32
  5. Step 5: Solve for x
    x = 10,454,413,452.32/118,420.40
  6. Step 6: Final answer
    x = 88,282.20

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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.