Home / 145,166.80-200,409.24-87,815.56

Finding the Fourth Proportional to 145,166.80, 200,409.24 and 87,815.56

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Solution

The fourth proportional to 145,166.80, 200,409.24 and 87,815.56 is: 121,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,166.80 : 200,409.24 = 87,815.56 : x
  2. Step 2: Convert to fraction form
    145,166.80/200,409.24 = 87,815.56/x
  3. Step 3: Cross multiply
    145,166.80x = 200,409.24 × 87,815.56
  4. Step 4: Simplify right side
    145,166.80x = 17,599,049,639.77
  5. Step 5: Solve for x
    x = 17,599,049,639.77/145,166.80
  6. Step 6: Final answer
    x = 121,233.30

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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.