Home / 139,516.20-209,339.10-73,031.40

Finding the Fourth Proportional to 139,516.20, 209,339.10 and 73,031.40

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Solution

The fourth proportional to 139,516.20, 209,339.10 and 73,031.40 is: 109,581.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,516.20 : 209,339.10 = 73,031.40 : x
  2. Step 2: Convert to fraction form
    139,516.20/209,339.10 = 73,031.40/x
  3. Step 3: Cross multiply
    139,516.20x = 209,339.10 × 73,031.40
  4. Step 4: Simplify right side
    139,516.20x = 15,288,327,547.74
  5. Step 5: Solve for x
    x = 15,288,327,547.74/139,516.20
  6. Step 6: Final answer
    x = 109,581.02

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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.