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Finding the Fourth Proportional to 154,382.88, 213,048.37 and 83,726.88

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Solution

The fourth proportional to 154,382.88, 213,048.37 and 83,726.88 is: 115,543.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,382.88 : 213,048.37 = 83,726.88 : x
  2. Step 2: Convert to fraction form
    154,382.88/213,048.37 = 83,726.88/x
  3. Step 3: Cross multiply
    154,382.88x = 213,048.37 × 83,726.88
  4. Step 4: Simplify right side
    154,382.88x = 17,837,875,309.19
  5. Step 5: Solve for x
    x = 17,837,875,309.19/154,382.88
  6. Step 6: Final answer
    x = 115,543.09

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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.