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Finding the Fourth Proportional to 163,818.71, 245,728.17 and 45,490.06

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Solution

The fourth proportional to 163,818.71, 245,728.17 and 45,490.06 is: 68,235.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,818.71 : 245,728.17 = 45,490.06 : x
  2. Step 2: Convert to fraction form
    163,818.71/245,728.17 = 45,490.06/x
  3. Step 3: Cross multiply
    163,818.71x = 245,728.17 × 45,490.06
  4. Step 4: Simplify right side
    163,818.71x = 11,178,189,583.86
  5. Step 5: Solve for x
    x = 11,178,189,583.86/163,818.71
  6. Step 6: Final answer
    x = 68,235.12

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1.5x scale

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.