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Finding the Fourth Proportional to 118,021.45, 162,865.02 and 64,306.87

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Solution

The fourth proportional to 118,021.45, 162,865.02 and 64,306.87 is: 88,740.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,021.45 : 162,865.02 = 64,306.87 : x
  2. Step 2: Convert to fraction form
    118,021.45/162,865.02 = 64,306.87/x
  3. Step 3: Cross multiply
    118,021.45x = 162,865.02 × 64,306.87
  4. Step 4: Simplify right side
    118,021.45x = 10,473,339,261.52
  5. Step 5: Solve for x
    x = 10,473,339,261.52/118,021.45
  6. Step 6: Final answer
    x = 88,740.98

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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.