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Finding the Fourth Proportional to 131,685.76, 197,549.15 and 42,918.67

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Solution

The fourth proportional to 131,685.76, 197,549.15 and 42,918.67 is: 64,384.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,685.76 : 197,549.15 = 42,918.67 : x
  2. Step 2: Convert to fraction form
    131,685.76/197,549.15 = 42,918.67/x
  3. Step 3: Cross multiply
    131,685.76x = 197,549.15 × 42,918.67
  4. Step 4: Simplify right side
    131,685.76x = 8,478,546,809.97
  5. Step 5: Solve for x
    x = 8,478,546,809.97/131,685.76
  6. Step 6: Final answer
    x = 64,384.69

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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.