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Finding the Fourth Proportional to 134,240.64, 184,978.92 and 103,841.28

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Solution

The fourth proportional to 134,240.64, 184,978.92 and 103,841.28 is: 143,089.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,240.64 : 184,978.92 = 103,841.28 : x
  2. Step 2: Convert to fraction form
    134,240.64/184,978.92 = 103,841.28/x
  3. Step 3: Cross multiply
    134,240.64x = 184,978.92 × 103,841.28
  4. Step 4: Simplify right side
    134,240.64x = 19,208,447,825.82
  5. Step 5: Solve for x
    x = 19,208,447,825.82/134,240.64
  6. Step 6: Final answer
    x = 143,089.66

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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.