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Finding the Fourth Proportional to 104,281.70, 156,386.10 and 54,345.20

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Solution

The fourth proportional to 104,281.70, 156,386.10 and 54,345.20 is: 81,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,281.70 : 156,386.10 = 54,345.20 : x
  2. Step 2: Convert to fraction form
    104,281.70/156,386.10 = 54,345.20/x
  3. Step 3: Cross multiply
    104,281.70x = 156,386.10 × 54,345.20
  4. Step 4: Simplify right side
    104,281.70x = 8,498,833,881.72
  5. Step 5: Solve for x
    x = 8,498,833,881.72/104,281.70
  6. Step 6: Final answer
    x = 81,498.80

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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.