Home / 145,486.04-200,747.60-81,811.53

Finding the Fourth Proportional to 145,486.04, 200,747.60 and 81,811.53

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Solution

The fourth proportional to 145,486.04, 200,747.60 and 81,811.53 is: 112,886.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,486.04 : 200,747.60 = 81,811.53 : x
  2. Step 2: Convert to fraction form
    145,486.04/200,747.60 = 81,811.53/x
  3. Step 3: Cross multiply
    145,486.04x = 200,747.60 × 81,811.53
  4. Step 4: Simplify right side
    145,486.04x = 16,423,467,890.77
  5. Step 5: Solve for x
    x = 16,423,467,890.77/145,486.04
  6. Step 6: Final answer
    x = 112,886.90

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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.