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Finding the Fourth Proportional to 130,364.40, 179,943.48 and 103,554.48

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Solution

The fourth proportional to 130,364.40, 179,943.48 and 103,554.48 is: 142,937.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,364.40 : 179,943.48 = 103,554.48 : x
  2. Step 2: Convert to fraction form
    130,364.40/179,943.48 = 103,554.48/x
  3. Step 3: Cross multiply
    130,364.40x = 179,943.48 × 103,554.48
  4. Step 4: Simplify right side
    130,364.40x = 18,633,953,500.79
  5. Step 5: Solve for x
    x = 18,633,953,500.79/130,364.40
  6. Step 6: Final answer
    x = 142,937.44

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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.