Home / 145,190.89-200,364.67-81,534.61

Finding the Fourth Proportional to 145,190.89, 200,364.67 and 81,534.61

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Solution

The fourth proportional to 145,190.89, 200,364.67 and 81,534.61 is: 112,518.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,190.89 : 200,364.67 = 81,534.61 : x
  2. Step 2: Convert to fraction form
    145,190.89/200,364.67 = 81,534.61/x
  3. Step 3: Cross multiply
    145,190.89x = 200,364.67 × 81,534.61
  4. Step 4: Simplify right side
    145,190.89x = 16,336,655,226.23
  5. Step 5: Solve for x
    x = 16,336,655,226.23/145,190.89
  6. Step 6: Final answer
    x = 112,518.46

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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.