Home / 185,861.99-256,502.25-105,290.18

Finding the Fourth Proportional to 185,861.99, 256,502.25 and 105,290.18

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Solution

The fourth proportional to 185,861.99, 256,502.25 and 105,290.18 is: 145,307.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,861.99 : 256,502.25 = 105,290.18 : x
  2. Step 2: Convert to fraction form
    185,861.99/256,502.25 = 105,290.18/x
  3. Step 3: Cross multiply
    185,861.99x = 256,502.25 × 105,290.18
  4. Step 4: Simplify right side
    185,861.99x = 27,007,168,072.91
  5. Step 5: Solve for x
    x = 27,007,168,072.91/185,861.99
  6. Step 6: Final answer
    x = 145,307.65

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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.