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Finding the Fourth Proportional to 115,044.49, 158,810.39 and 77,340.61

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Solution

The fourth proportional to 115,044.49, 158,810.39 and 77,340.61 is: 106,762.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,044.49 : 158,810.39 = 77,340.61 : x
  2. Step 2: Convert to fraction form
    115,044.49/158,810.39 = 77,340.61/x
  3. Step 3: Cross multiply
    115,044.49x = 158,810.39 × 77,340.61
  4. Step 4: Simplify right side
    115,044.49x = 12,282,492,436.94
  5. Step 5: Solve for x
    x = 12,282,492,436.94/115,044.49
  6. Step 6: Final answer
    x = 106,762.98

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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.