Home / 153,359.55-211,631.00-86,278.59

Finding the Fourth Proportional to 153,359.55, 211,631.00 and 86,278.59

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Solution

The fourth proportional to 153,359.55, 211,631.00 and 86,278.59 is: 119,061.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,359.55 : 211,631.00 = 86,278.59 : x
  2. Step 2: Convert to fraction form
    153,359.55/211,631.00 = 86,278.59/x
  3. Step 3: Cross multiply
    153,359.55x = 211,631.00 × 86,278.59
  4. Step 4: Simplify right side
    153,359.55x = 18,259,223,848.90
  5. Step 5: Solve for x
    x = 18,259,223,848.90/153,359.55
  6. Step 6: Final answer
    x = 119,061.54

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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.