Home / 145,228.95-200,404.73-81,554.45

Finding the Fourth Proportional to 145,228.95, 200,404.73 and 81,554.45

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Solution

The fourth proportional to 145,228.95, 200,404.73 and 81,554.45 is: 112,538.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,228.95 : 200,404.73 = 81,554.45 : x
  2. Step 2: Convert to fraction form
    145,228.95/200,404.73 = 81,554.45/x
  3. Step 3: Cross multiply
    145,228.95x = 200,404.73 × 81,554.45
  4. Step 4: Simplify right side
    145,228.95x = 16,343,896,734.41
  5. Step 5: Solve for x
    x = 16,343,896,734.41/145,228.95
  6. Step 6: Final answer
    x = 112,538.83

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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.