Home / 136,748.75-188,722.76-76,331.16

Finding the Fourth Proportional to 136,748.75, 188,722.76 and 76,331.16

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Solution

The fourth proportional to 136,748.75, 188,722.76 and 76,331.16 is: 105,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,748.75 : 188,722.76 = 76,331.16 : x
  2. Step 2: Convert to fraction form
    136,748.75/188,722.76 = 76,331.16/x
  3. Step 3: Cross multiply
    136,748.75x = 188,722.76 × 76,331.16
  4. Step 4: Simplify right side
    136,748.75x = 14,405,426,807.55
  5. Step 5: Solve for x
    x = 14,405,426,807.55/136,748.75
  6. Step 6: Final answer
    x = 105,342.30

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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.