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Finding the Fourth Proportional to 100,341.78, 150,348.42 and 70,707.84

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Solution

The fourth proportional to 100,341.78, 150,348.42 and 70,707.84 is: 105,946.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,341.78 : 150,348.42 = 70,707.84 : x
  2. Step 2: Convert to fraction form
    100,341.78/150,348.42 = 70,707.84/x
  3. Step 3: Cross multiply
    100,341.78x = 150,348.42 × 70,707.84
  4. Step 4: Simplify right side
    100,341.78x = 10,630,812,025.61
  5. Step 5: Solve for x
    x = 10,630,812,025.61/100,341.78
  6. Step 6: Final answer
    x = 105,946.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.