Home / 139,279.28-192,200.16-75,615.70

Finding the Fourth Proportional to 139,279.28, 192,200.16 and 75,615.70

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Solution

The fourth proportional to 139,279.28, 192,200.16 and 75,615.70 is: 104,346.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,279.28 : 192,200.16 = 75,615.70 : x
  2. Step 2: Convert to fraction form
    139,279.28/192,200.16 = 75,615.70/x
  3. Step 3: Cross multiply
    139,279.28x = 192,200.16 × 75,615.70
  4. Step 4: Simplify right side
    139,279.28x = 14,533,349,638.51
  5. Step 5: Solve for x
    x = 14,533,349,638.51/139,279.28
  6. Step 6: Final answer
    x = 104,346.82

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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.