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Finding the Fourth Proportional to 118,497.72, 177,756 and 39,612.36

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Solution

The fourth proportional to 118,497.72, 177,756 and 39,612.36 is: 59,421.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,497.72 : 177,756 = 39,612.36 : x
  2. Step 2: Convert to fraction form
    118,497.72/177,756 = 39,612.36/x
  3. Step 3: Cross multiply
    118,497.72x = 177,756 × 39,612.36
  4. Step 4: Simplify right side
    118,497.72x = 7,041,334,664.16
  5. Step 5: Solve for x
    x = 7,041,334,664.16/118,497.72
  6. Step 6: Final answer
    x = 59,421.69

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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.