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Finding the Fourth Proportional to 208,061.66, 312,018.68 and 74,906.16

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Solution

The fourth proportional to 208,061.66, 312,018.68 and 74,906.16 is: 112,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,061.66 : 312,018.68 = 74,906.16 : x
  2. Step 2: Convert to fraction form
    208,061.66/312,018.68 = 74,906.16/x
  3. Step 3: Cross multiply
    208,061.66x = 312,018.68 × 74,906.16
  4. Step 4: Simplify right side
    208,061.66x = 23,372,121,167.07
  5. Step 5: Solve for x
    x = 23,372,121,167.07/208,061.66
  6. Step 6: Final answer
    x = 112,332.67

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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.