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Finding the Fourth Proportional to 158,390.83, 218,579.34 and 94,728.63

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Solution

The fourth proportional to 158,390.83, 218,579.34 and 94,728.63 is: 130,725.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,390.83 : 218,579.34 = 94,728.63 : x
  2. Step 2: Convert to fraction form
    158,390.83/218,579.34 = 94,728.63/x
  3. Step 3: Cross multiply
    158,390.83x = 218,579.34 × 94,728.63
  4. Step 4: Simplify right side
    158,390.83x = 20,705,721,424.50
  5. Step 5: Solve for x
    x = 20,705,721,424.50/158,390.83
  6. Step 6: Final answer
    x = 130,725.51

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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.