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Finding the Fourth Proportional to 186,407.75, 279,440.76 and 72,632.32

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Solution

The fourth proportional to 186,407.75, 279,440.76 and 72,632.32 is: 108,881.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,407.75 : 279,440.76 = 72,632.32 : x
  2. Step 2: Convert to fraction form
    186,407.75/279,440.76 = 72,632.32/x
  3. Step 3: Cross multiply
    186,407.75x = 279,440.76 × 72,632.32
  4. Step 4: Simplify right side
    186,407.75x = 20,296,430,701.36
  5. Step 5: Solve for x
    x = 20,296,430,701.36/186,407.75
  6. Step 6: Final answer
    x = 108,881.90

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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.