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Finding the Fourth Proportional to 118,689.48, 163,717.74 and 73,381.32

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Solution

The fourth proportional to 118,689.48, 163,717.74 and 73,381.32 is: 101,220.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,689.48 : 163,717.74 = 73,381.32 : x
  2. Step 2: Convert to fraction form
    118,689.48/163,717.74 = 73,381.32/x
  3. Step 3: Cross multiply
    118,689.48x = 163,717.74 × 73,381.32
  4. Step 4: Simplify right side
    118,689.48x = 12,013,823,868.62
  5. Step 5: Solve for x
    x = 12,013,823,868.62/118,689.48
  6. Step 6: Final answer
    x = 101,220.63

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1.5x scale

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.