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Finding the Fourth Proportional to 153,549.10, 211,894.95 and 86,481.10

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Solution

The fourth proportional to 153,549.10, 211,894.95 and 86,481.10 is: 119,342.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,549.10 : 211,894.95 = 86,481.10 : x
  2. Step 2: Convert to fraction form
    153,549.10/211,894.95 = 86,481.10/x
  3. Step 3: Cross multiply
    153,549.10x = 211,894.95 × 86,481.10
  4. Step 4: Simplify right side
    153,549.10x = 18,324,908,360.45
  5. Step 5: Solve for x
    x = 18,324,908,360.45/153,549.10
  6. Step 6: Final answer
    x = 119,342.34

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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.