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Finding the Fourth Proportional to 153,455.52, 211,765.40 and 85,472.32

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Solution

The fourth proportional to 153,455.52, 211,765.40 and 85,472.32 is: 117,950.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,455.52 : 211,765.40 = 85,472.32 : x
  2. Step 2: Convert to fraction form
    153,455.52/211,765.40 = 85,472.32/x
  3. Step 3: Cross multiply
    153,455.52x = 211,765.40 × 85,472.32
  4. Step 4: Simplify right side
    153,455.52x = 18,100,080,033.73
  5. Step 5: Solve for x
    x = 18,100,080,033.73/153,455.52
  6. Step 6: Final answer
    x = 117,950.01

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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.