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Finding the Fourth Proportional to 163,686.49, 245,529.06 and 45,357.49

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Solution

The fourth proportional to 163,686.49, 245,529.06 and 45,357.49 is: 68,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,686.49 : 245,529.06 = 45,357.49 : x
  2. Step 2: Convert to fraction form
    163,686.49/245,529.06 = 45,357.49/x
  3. Step 3: Cross multiply
    163,686.49x = 245,529.06 × 45,357.49
  4. Step 4: Simplify right side
    163,686.49x = 11,136,581,883.66
  5. Step 5: Solve for x
    x = 11,136,581,883.66/163,686.49
  6. Step 6: Final answer
    x = 68,036.05

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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.