Home / 111,876.30-154,337.40-66,528.90

Finding the Fourth Proportional to 111,876.30, 154,337.40 and 66,528.90

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Solution

The fourth proportional to 111,876.30, 154,337.40 and 66,528.90 is: 91,779.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,876.30 : 154,337.40 = 66,528.90 : x
  2. Step 2: Convert to fraction form
    111,876.30/154,337.40 = 66,528.90/x
  3. Step 3: Cross multiply
    111,876.30x = 154,337.40 × 66,528.90
  4. Step 4: Simplify right side
    111,876.30x = 10,267,897,450.86
  5. Step 5: Solve for x
    x = 10,267,897,450.86/111,876.30
  6. Step 6: Final answer
    x = 91,779.02

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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.