Home / 131,554.31-181,423.80-86,215.77

Finding the Fourth Proportional to 131,554.31, 181,423.80 and 86,215.77

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Solution

The fourth proportional to 131,554.31, 181,423.80 and 86,215.77 is: 118,898.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,554.31 : 181,423.80 = 86,215.77 : x
  2. Step 2: Convert to fraction form
    131,554.31/181,423.80 = 86,215.77/x
  3. Step 3: Cross multiply
    131,554.31x = 181,423.80 × 86,215.77
  4. Step 4: Simplify right side
    131,554.31x = 15,641,592,613.33
  5. Step 5: Solve for x
    x = 15,641,592,613.33/131,554.31
  6. Step 6: Final answer
    x = 118,898.37

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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.