Home / 153,406.12-211,700.34-86,339.56

Finding the Fourth Proportional to 153,406.12, 211,700.34 and 86,339.56

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Solution

The fourth proportional to 153,406.12, 211,700.34 and 86,339.56 is: 119,148.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,406.12 : 211,700.34 = 86,339.56 : x
  2. Step 2: Convert to fraction form
    153,406.12/211,700.34 = 86,339.56/x
  3. Step 3: Cross multiply
    153,406.12x = 211,700.34 × 86,339.56
  4. Step 4: Simplify right side
    153,406.12x = 18,278,114,207.45
  5. Step 5: Solve for x
    x = 18,278,114,207.45/153,406.12
  6. Step 6: Final answer
    x = 119,148.53

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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.