Home / 145,330.70-200,554.56-81,679.28

Finding the Fourth Proportional to 145,330.70, 200,554.56 and 81,679.28

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Solution

The fourth proportional to 145,330.70, 200,554.56 and 81,679.28 is: 112,716.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,330.70 : 200,554.56 = 81,679.28 : x
  2. Step 2: Convert to fraction form
    145,330.70/200,554.56 = 81,679.28/x
  3. Step 3: Cross multiply
    145,330.70x = 200,554.56 × 81,679.28
  4. Step 4: Simplify right side
    145,330.70x = 16,381,152,061.52
  5. Step 5: Solve for x
    x = 16,381,152,061.52/145,330.70
  6. Step 6: Final answer
    x = 112,716.39

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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.