Home / 86,934,272.10-130,401,408.15-85,658,813.70

Finding the Fourth Proportional to 86,934,272.10, 130,401,408.15 and 85,658,813.70

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Solution

The fourth proportional to 86,934,272.10, 130,401,408.15 and 85,658,813.70 is: 128,488,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,934,272.10 : 130,401,408.15 = 85,658,813.70 : x
  2. Step 2: Convert to fraction form
    86,934,272.10/130,401,408.15 = 85,658,813.70/x
  3. Step 3: Cross multiply
    86,934,272.10x = 130,401,408.15 × 85,658,813.70
  4. Step 4: Simplify right side
    86,934,272.10x = 11,170,029,926,938,512
  5. Step 5: Solve for x
    x = 11,170,029,926,938,512/86,934,272.10
  6. Step 6: Final answer
    x = 128,488,220.55

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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.