Home / 145,247.85-200,442.14-81,585.69

Finding the Fourth Proportional to 145,247.85, 200,442.14 and 81,585.69

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Solution

The fourth proportional to 145,247.85, 200,442.14 and 81,585.69 is: 112,588.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,247.85 : 200,442.14 = 81,585.69 : x
  2. Step 2: Convert to fraction form
    145,247.85/200,442.14 = 81,585.69/x
  3. Step 3: Cross multiply
    145,247.85x = 200,442.14 × 81,585.69
  4. Step 4: Simplify right side
    145,247.85x = 16,353,209,889.05
  5. Step 5: Solve for x
    x = 16,353,209,889.05/145,247.85
  6. Step 6: Final answer
    x = 112,588.31

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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.