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Finding the Fourth Proportional to 163,685.87, 245,528.12 and 45,356.87

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Solution

The fourth proportional to 163,685.87, 245,528.12 and 45,356.87 is: 68,035.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,685.87 : 245,528.12 = 45,356.87 : x
  2. Step 2: Convert to fraction form
    163,685.87/245,528.12 = 45,356.87/x
  3. Step 3: Cross multiply
    163,685.87x = 245,528.12 × 45,356.87
  4. Step 4: Simplify right side
    163,685.87x = 11,136,385,565.76
  5. Step 5: Solve for x
    x = 11,136,385,565.76/163,685.87
  6. Step 6: Final answer
    x = 68,035.11

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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.