Home / 142,680.45-196,898.94-79,018.20

Finding the Fourth Proportional to 142,680.45, 196,898.94 and 79,018.20

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Solution

The fourth proportional to 142,680.45, 196,898.94 and 79,018.20 is: 109,045.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,680.45 : 196,898.94 = 79,018.20 : x
  2. Step 2: Convert to fraction form
    142,680.45/196,898.94 = 79,018.20/x
  3. Step 3: Cross multiply
    142,680.45x = 196,898.94 × 79,018.20
  4. Step 4: Simplify right side
    142,680.45x = 15,558,599,820.71
  5. Step 5: Solve for x
    x = 15,558,599,820.71/142,680.45
  6. Step 6: Final answer
    x = 109,045.07

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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.