Home / 118,550.13-163,614.10-77,748.56

Finding the Fourth Proportional to 118,550.13, 163,614.10 and 77,748.56

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Solution

The fourth proportional to 118,550.13, 163,614.10 and 77,748.56 is: 107,302.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,550.13 : 163,614.10 = 77,748.56 : x
  2. Step 2: Convert to fraction form
    118,550.13/163,614.10 = 77,748.56/x
  3. Step 3: Cross multiply
    118,550.13x = 163,614.10 × 77,748.56
  4. Step 4: Simplify right side
    118,550.13x = 12,720,760,636.25
  5. Step 5: Solve for x
    x = 12,720,760,636.25/118,550.13
  6. Step 6: Final answer
    x = 107,302.80

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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.