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Finding the Fourth Proportional to 127,938.20, 178,880.20 and 127,938.20

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Solution

The fourth proportional to 127,938.20, 178,880.20 and 127,938.20 is: 178,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,938.20 : 178,880.20 = 127,938.20 : x
  2. Step 2: Convert to fraction form
    127,938.20/178,880.20 = 127,938.20/x
  3. Step 3: Cross multiply
    127,938.20x = 178,880.20 × 127,938.20
  4. Step 4: Simplify right side
    127,938.20x = 22,885,610,803.64
  5. Step 5: Solve for x
    x = 22,885,610,803.64/127,938.20
  6. Step 6: Final answer
    x = 178,880.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.