Home / 145,235.27-200,424.74-81,573.06

Finding the Fourth Proportional to 145,235.27, 200,424.74 and 81,573.06

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Solution

The fourth proportional to 145,235.27, 200,424.74 and 81,573.06 is: 112,570.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,235.27 : 200,424.74 = 81,573.06 : x
  2. Step 2: Convert to fraction form
    145,235.27/200,424.74 = 81,573.06/x
  3. Step 3: Cross multiply
    145,235.27x = 200,424.74 × 81,573.06
  4. Step 4: Simplify right side
    145,235.27x = 16,349,259,341.50
  5. Step 5: Solve for x
    x = 16,349,259,341.50/145,235.27
  6. Step 6: Final answer
    x = 112,570.86

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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.