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Finding the Fourth Proportional to 163,686.87, 245,529.61 and 45,357.87

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Solution

The fourth proportional to 163,686.87, 245,529.61 and 45,357.87 is: 68,036.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,686.87 : 245,529.61 = 45,357.87 : x
  2. Step 2: Convert to fraction form
    163,686.87/245,529.61 = 45,357.87/x
  3. Step 3: Cross multiply
    163,686.87x = 245,529.61 × 45,357.87
  4. Step 4: Simplify right side
    163,686.87x = 11,136,700,131.53
  5. Step 5: Solve for x
    x = 11,136,700,131.53/163,686.87
  6. Step 6: Final answer
    x = 68,036.61

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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.