Home / 166,021.32-229,113.06-90,569.76

Finding the Fourth Proportional to 166,021.32, 229,113.06 and 90,569.76

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Solution

The fourth proportional to 166,021.32, 229,113.06 and 90,569.76 is: 124,988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,021.32 : 229,113.06 = 90,569.76 : x
  2. Step 2: Convert to fraction form
    166,021.32/229,113.06 = 90,569.76/x
  3. Step 3: Cross multiply
    166,021.32x = 229,113.06 × 90,569.76
  4. Step 4: Simplify right side
    166,021.32x = 20,750,714,857.07
  5. Step 5: Solve for x
    x = 20,750,714,857.07/166,021.32
  6. Step 6: Final answer
    x = 124,988.25

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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.