Home / 142,124.27-196,126.34-78,460.70

Finding the Fourth Proportional to 142,124.27, 196,126.34 and 78,460.70

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Solution

The fourth proportional to 142,124.27, 196,126.34 and 78,460.70 is: 108,272.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,124.27 : 196,126.34 = 78,460.70 : x
  2. Step 2: Convert to fraction form
    142,124.27/196,126.34 = 78,460.70/x
  3. Step 3: Cross multiply
    142,124.27x = 196,126.34 × 78,460.70
  4. Step 4: Simplify right side
    142,124.27x = 15,388,209,924.84
  5. Step 5: Solve for x
    x = 15,388,209,924.84/142,124.27
  6. Step 6: Final answer
    x = 108,272.92

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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.