Home / 136,416.72-188,259.77-79,056.16

Finding the Fourth Proportional to 136,416.72, 188,259.77 and 79,056.16

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Solution

The fourth proportional to 136,416.72, 188,259.77 and 79,056.16 is: 109,100.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,416.72 : 188,259.77 = 79,056.16 : x
  2. Step 2: Convert to fraction form
    136,416.72/188,259.77 = 79,056.16/x
  3. Step 3: Cross multiply
    136,416.72x = 188,259.77 × 79,056.16
  4. Step 4: Simplify right side
    136,416.72x = 14,883,094,498.68
  5. Step 5: Solve for x
    x = 14,883,094,498.68/136,416.72
  6. Step 6: Final answer
    x = 109,100.22

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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.