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Finding the Fourth Proportional to 118,123.76, 163,006.44 and 64,407.80

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Solution

The fourth proportional to 118,123.76, 163,006.44 and 64,407.80 is: 88,880.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,123.76 : 163,006.44 = 64,407.80 : x
  2. Step 2: Convert to fraction form
    118,123.76/163,006.44 = 64,407.80/x
  3. Step 3: Cross multiply
    118,123.76x = 163,006.44 × 64,407.80
  4. Step 4: Simplify right side
    118,123.76x = 10,498,886,186.23
  5. Step 5: Solve for x
    x = 10,498,886,186.23/118,123.76
  6. Step 6: Final answer
    x = 88,880.39

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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.