Home / 145,062.36-217,660.50-66,200.76

Finding the Fourth Proportional to 145,062.36, 217,660.50 and 66,200.76

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Solution

The fourth proportional to 145,062.36, 217,660.50 and 66,200.76 is: 99,331.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,062.36 : 217,660.50 = 66,200.76 : x
  2. Step 2: Convert to fraction form
    145,062.36/217,660.50 = 66,200.76/x
  3. Step 3: Cross multiply
    145,062.36x = 217,660.50 × 66,200.76
  4. Step 4: Simplify right side
    145,062.36x = 14,409,290,521.98
  5. Step 5: Solve for x
    x = 14,409,290,521.98/145,062.36
  6. Step 6: Final answer
    x = 99,331.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.