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Finding the Fourth Proportional to 147,468.80, 203,470.40 and 87,040.64

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Solution

The fourth proportional to 147,468.80, 203,470.40 and 87,040.64 is: 120,094.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,468.80 : 203,470.40 = 87,040.64 : x
  2. Step 2: Convert to fraction form
    147,468.80/203,470.40 = 87,040.64/x
  3. Step 3: Cross multiply
    147,468.80x = 203,470.40 × 87,040.64
  4. Step 4: Simplify right side
    147,468.80x = 17,710,193,837.06
  5. Step 5: Solve for x
    x = 17,710,193,837.06/147,468.80
  6. Step 6: Final answer
    x = 120,094.51

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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.