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Finding the Fourth Proportional to 115,043.49, 158,809.01 and 77,339.61

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Solution

The fourth proportional to 115,043.49, 158,809.01 and 77,339.61 is: 106,761.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,043.49 : 158,809.01 = 77,339.61 : x
  2. Step 2: Convert to fraction form
    115,043.49/158,809.01 = 77,339.61/x
  3. Step 3: Cross multiply
    115,043.49x = 158,809.01 × 77,339.61
  4. Step 4: Simplify right side
    115,043.49x = 12,282,226,511.19
  5. Step 5: Solve for x
    x = 12,282,226,511.19/115,043.49
  6. Step 6: Final answer
    x = 106,761.60

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1.5x scale

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.