Home / 123,211.20-170,030.40-66,622.08

Finding the Fourth Proportional to 123,211.20, 170,030.40 and 66,622.08

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Solution

The fourth proportional to 123,211.20, 170,030.40 and 66,622.08 is: 91,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,211.20 : 170,030.40 = 66,622.08 : x
  2. Step 2: Convert to fraction form
    123,211.20/170,030.40 = 66,622.08/x
  3. Step 3: Cross multiply
    123,211.20x = 170,030.40 × 66,622.08
  4. Step 4: Simplify right side
    123,211.20x = 11,327,778,911.23
  5. Step 5: Solve for x
    x = 11,327,778,911.23/123,211.20
  6. Step 6: Final answer
    x = 91,937.90

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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.