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Finding the Fourth Proportional to 153,771.60, 211,889.88 and 113,421.48

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Solution

The fourth proportional to 153,771.60, 211,889.88 and 113,421.48 is: 156,289.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,771.60 : 211,889.88 = 113,421.48 : x
  2. Step 2: Convert to fraction form
    153,771.60/211,889.88 = 113,421.48/x
  3. Step 3: Cross multiply
    153,771.60x = 211,889.88 × 113,421.48
  4. Step 4: Simplify right side
    153,771.60x = 24,032,863,786.62
  5. Step 5: Solve for x
    x = 24,032,863,786.62/153,771.60
  6. Step 6: Final answer
    x = 156,289.35

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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.