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Finding the Fourth Proportional to 118,710.94, 163,821.12 and 64,999.42

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Solution

The fourth proportional to 118,710.94, 163,821.12 and 64,999.42 is: 89,699.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,710.94 : 163,821.12 = 64,999.42 : x
  2. Step 2: Convert to fraction form
    118,710.94/163,821.12 = 64,999.42/x
  3. Step 3: Cross multiply
    118,710.94x = 163,821.12 × 64,999.42
  4. Step 4: Simplify right side
    118,710.94x = 10,648,277,783.75
  5. Step 5: Solve for x
    x = 10,648,277,783.75/118,710.94
  6. Step 6: Final answer
    x = 89,699.21

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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.