Home / 112,257.87-168,147.40-90,818.59

Finding the Fourth Proportional to 112,257.87, 168,147.40 and 90,818.59

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Solution

The fourth proportional to 112,257.87, 168,147.40 and 90,818.59 is: 136,034.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,257.87 : 168,147.40 = 90,818.59 : x
  2. Step 2: Convert to fraction form
    112,257.87/168,147.40 = 90,818.59/x
  3. Step 3: Cross multiply
    112,257.87x = 168,147.40 × 90,818.59
  4. Step 4: Simplify right side
    112,257.87x = 15,270,908,485.34
  5. Step 5: Solve for x
    x = 15,270,908,485.34/112,257.87
  6. Step 6: Final answer
    x = 136,034.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.