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Finding the Fourth Proportional to 118,127.72, 177,139.58 and 43,228.40

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Solution

The fourth proportional to 118,127.72, 177,139.58 and 43,228.40 is: 64,823.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,127.72 : 177,139.58 = 43,228.40 : x
  2. Step 2: Convert to fraction form
    118,127.72/177,139.58 = 43,228.40/x
  3. Step 3: Cross multiply
    118,127.72x = 177,139.58 × 43,228.40
  4. Step 4: Simplify right side
    118,127.72x = 7,657,460,620.07
  5. Step 5: Solve for x
    x = 7,657,460,620.07/118,127.72
  6. Step 6: Final answer
    x = 64,823.57

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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.