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Finding the Fourth Proportional to 153,378.94, 211,630.40 and 96,757.50

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Solution

The fourth proportional to 153,378.94, 211,630.40 and 96,757.50 is: 133,504.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,378.94 : 211,630.40 = 96,757.50 : x
  2. Step 2: Convert to fraction form
    153,378.94/211,630.40 = 96,757.50/x
  3. Step 3: Cross multiply
    153,378.94x = 211,630.40 × 96,757.50
  4. Step 4: Simplify right side
    153,378.94x = 20,476,828,428
  5. Step 5: Solve for x
    x = 20,476,828,428/153,378.94
  6. Step 6: Final answer
    x = 133,504.82

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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.