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Finding the Fourth Proportional to 153,575.43, 211,935.15 and 85,596.79

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Solution

The fourth proportional to 153,575.43, 211,935.15 and 85,596.79 is: 118,124.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,575.43 : 211,935.15 = 85,596.79 : x
  2. Step 2: Convert to fraction form
    153,575.43/211,935.15 = 85,596.79/x
  3. Step 3: Cross multiply
    153,575.43x = 211,935.15 × 85,596.79
  4. Step 4: Simplify right side
    153,575.43x = 18,140,967,468.49
  5. Step 5: Solve for x
    x = 18,140,967,468.49/153,575.43
  6. Step 6: Final answer
    x = 118,124.15

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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.