Home / 161,808.09-223,296.21-90,192.66

Finding the Fourth Proportional to 161,808.09, 223,296.21 and 90,192.66

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Solution

The fourth proportional to 161,808.09, 223,296.21 and 90,192.66 is: 124,466.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,808.09 : 223,296.21 = 90,192.66 : x
  2. Step 2: Convert to fraction form
    161,808.09/223,296.21 = 90,192.66/x
  3. Step 3: Cross multiply
    161,808.09x = 223,296.21 × 90,192.66
  4. Step 4: Simplify right side
    161,808.09x = 20,139,679,147.82
  5. Step 5: Solve for x
    x = 20,139,679,147.82/161,808.09
  6. Step 6: Final answer
    x = 124,466.45

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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.