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Finding the Fourth Proportional to 207,767.62, 286,955.78 and 139,666.49

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Solution

The fourth proportional to 207,767.62, 286,955.78 and 139,666.49 is: 192,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,767.62 : 286,955.78 = 139,666.49 : x
  2. Step 2: Convert to fraction form
    207,767.62/286,955.78 = 139,666.49/x
  3. Step 3: Cross multiply
    207,767.62x = 286,955.78 × 139,666.49
  4. Step 4: Simplify right side
    207,767.62x = 40,078,106,577.81
  5. Step 5: Solve for x
    x = 40,078,106,577.81/207,767.62
  6. Step 6: Final answer
    x = 192,898.71

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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.