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Finding the Fourth Proportional to 127,986.50, 176,599.50 and 74,259.20

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Solution

The fourth proportional to 127,986.50, 176,599.50 and 74,259.20 is: 102,465.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,986.50 : 176,599.50 = 74,259.20 : x
  2. Step 2: Convert to fraction form
    127,986.50/176,599.50 = 74,259.20/x
  3. Step 3: Cross multiply
    127,986.50x = 176,599.50 × 74,259.20
  4. Step 4: Simplify right side
    127,986.50x = 13,114,137,590.40
  5. Step 5: Solve for x
    x = 13,114,137,590.40/127,986.50
  6. Step 6: Final answer
    x = 102,465.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.