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Finding the Fourth Proportional to 153,307.52, 211,571.35 and 85,328.84

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Solution

The fourth proportional to 153,307.52, 211,571.35 and 85,328.84 is: 117,757.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,307.52 : 211,571.35 = 85,328.84 : x
  2. Step 2: Convert to fraction form
    153,307.52/211,571.35 = 85,328.84/x
  3. Step 3: Cross multiply
    153,307.52x = 211,571.35 × 85,328.84
  4. Step 4: Simplify right side
    153,307.52x = 18,053,138,248.34
  5. Step 5: Solve for x
    x = 18,053,138,248.34/153,307.52
  6. Step 6: Final answer
    x = 117,757.68

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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.