Home / 86,934,170.20-130,401,255.30-85,800,429.40

Finding the Fourth Proportional to 86,934,170.20, 130,401,255.30 and 85,800,429.40

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Solution

The fourth proportional to 86,934,170.20, 130,401,255.30 and 85,800,429.40 is: 128,700,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,934,170.20 : 130,401,255.30 = 85,800,429.40 : x
  2. Step 2: Convert to fraction form
    86,934,170.20/130,401,255.30 = 85,800,429.40/x
  3. Step 3: Cross multiply
    86,934,170.20x = 130,401,255.30 × 85,800,429.40
  4. Step 4: Simplify right side
    86,934,170.20x = 11,188,483,699,039,026
  5. Step 5: Solve for x
    x = 11,188,483,699,039,026/86,934,170.20
  6. Step 6: Final answer
    x = 128,700,644.10

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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.