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Finding the Fourth Proportional to 118,653.20, 163,739.20 and 64,937.12

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Solution

The fourth proportional to 118,653.20, 163,739.20 and 64,937.12 is: 89,612.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,653.20 : 163,739.20 = 64,937.12 : x
  2. Step 2: Convert to fraction form
    118,653.20/163,739.20 = 64,937.12/x
  3. Step 3: Cross multiply
    118,653.20x = 163,739.20 × 64,937.12
  4. Step 4: Simplify right side
    118,653.20x = 10,632,752,079.10
  5. Step 5: Solve for x
    x = 10,632,752,079.10/118,653.20
  6. Step 6: Final answer
    x = 89,612.01

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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.