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Finding the Fourth Proportional to 118,707.04, 163,809.43 and 64,981.65

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Solution

The fourth proportional to 118,707.04, 163,809.43 and 64,981.65 is: 89,671.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,707.04 : 163,809.43 = 64,981.65 : x
  2. Step 2: Convert to fraction form
    118,707.04/163,809.43 = 64,981.65/x
  3. Step 3: Cross multiply
    118,707.04x = 163,809.43 × 64,981.65
  4. Step 4: Simplify right side
    118,707.04x = 10,644,607,046.96
  5. Step 5: Solve for x
    x = 10,644,607,046.96/118,707.04
  6. Step 6: Final answer
    x = 89,671.24

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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.