Home / 112,021.20-168,031.80-102,344.40

Finding the Fourth Proportional to 112,021.20, 168,031.80 and 102,344.40

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Solution

The fourth proportional to 112,021.20, 168,031.80 and 102,344.40 is: 153,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,021.20 : 168,031.80 = 102,344.40 : x
  2. Step 2: Convert to fraction form
    112,021.20/168,031.80 = 102,344.40/x
  3. Step 3: Cross multiply
    112,021.20x = 168,031.80 × 102,344.40
  4. Step 4: Simplify right side
    112,021.20x = 17,197,113,751.92
  5. Step 5: Solve for x
    x = 17,197,113,751.92/112,021.20
  6. Step 6: Final answer
    x = 153,516.60

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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.