Home / 145,530.64-200,831.99-81,868.49

Finding the Fourth Proportional to 145,530.64, 200,831.99 and 81,868.49

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Solution

The fourth proportional to 145,530.64, 200,831.99 and 81,868.49 is: 112,978.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,530.64 : 200,831.99 = 81,868.49 : x
  2. Step 2: Convert to fraction form
    145,530.64/200,831.99 = 81,868.49/x
  3. Step 3: Cross multiply
    145,530.64x = 200,831.99 × 81,868.49
  4. Step 4: Simplify right side
    145,530.64x = 16,441,810,351.49
  5. Step 5: Solve for x
    x = 16,441,810,351.49/145,530.64
  6. Step 6: Final answer
    x = 112,978.34

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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.