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Finding the Fourth Proportional to 153,403.70, 211,640.92 and 92,930.72

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Solution

The fourth proportional to 153,403.70, 211,640.92 and 92,930.72 is: 128,210.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,403.70 : 211,640.92 = 92,930.72 : x
  2. Step 2: Convert to fraction form
    153,403.70/211,640.92 = 92,930.72/x
  3. Step 3: Cross multiply
    153,403.70x = 211,640.92 × 92,930.72
  4. Step 4: Simplify right side
    153,403.70x = 19,667,941,786.53
  5. Step 5: Solve for x
    x = 19,667,941,786.53/153,403.70
  6. Step 6: Final answer
    x = 128,210.35

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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.