Home / 112,397.45-168,104.10-85,825.40

Finding the Fourth Proportional to 112,397.45, 168,104.10 and 85,825.40

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Solution

The fourth proportional to 112,397.45, 168,104.10 and 85,825.40 is: 128,362.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,397.45 : 168,104.10 = 85,825.40 : x
  2. Step 2: Convert to fraction form
    112,397.45/168,104.10 = 85,825.40/x
  3. Step 3: Cross multiply
    112,397.45x = 168,104.10 × 85,825.40
  4. Step 4: Simplify right side
    112,397.45x = 14,427,601,624.14
  5. Step 5: Solve for x
    x = 14,427,601,624.14/112,397.45
  6. Step 6: Final answer
    x = 128,362.36

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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.