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Finding the Fourth Proportional to 118,437.21, 163,445.49 and 64,724.49

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Solution

The fourth proportional to 118,437.21, 163,445.49 and 64,724.49 is: 89,320.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,437.21 : 163,445.49 = 64,724.49 : x
  2. Step 2: Convert to fraction form
    118,437.21/163,445.49 = 64,724.49/x
  3. Step 3: Cross multiply
    118,437.21x = 163,445.49 × 64,724.49
  4. Step 4: Simplify right side
    118,437.21x = 10,578,925,983.05
  5. Step 5: Solve for x
    x = 10,578,925,983.05/118,437.21
  6. Step 6: Final answer
    x = 89,320.97

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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.