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Finding the Fourth Proportional to 186,764.76, 279,952.74 and 139,875.48

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Solution

The fourth proportional to 186,764.76, 279,952.74 and 139,875.48 is: 209,667.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,764.76 : 279,952.74 = 139,875.48 : x
  2. Step 2: Convert to fraction form
    186,764.76/279,952.74 = 139,875.48/x
  3. Step 3: Cross multiply
    186,764.76x = 279,952.74 × 139,875.48
  4. Step 4: Simplify right side
    186,764.76x = 39,158,523,884.82
  5. Step 5: Solve for x
    x = 39,158,523,884.82/186,764.76
  6. Step 6: Final answer
    x = 209,667.63

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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.