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Finding the Fourth Proportional to 108,560.28, 163,089.90 and 77,048.58

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Solution

The fourth proportional to 108,560.28, 163,089.90 and 77,048.58 is: 115,749.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,560.28 : 163,089.90 = 77,048.58 : x
  2. Step 2: Convert to fraction form
    108,560.28/163,089.90 = 77,048.58/x
  3. Step 3: Cross multiply
    108,560.28x = 163,089.90 × 77,048.58
  4. Step 4: Simplify right side
    108,560.28x = 12,565,845,207.34
  5. Step 5: Solve for x
    x = 12,565,845,207.34/108,560.28
  6. Step 6: Final answer
    x = 115,749.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.