Home / 99,531.70-149,297.55-86,701.30

Finding the Fourth Proportional to 99,531.70, 149,297.55 and 86,701.30

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Solution

The fourth proportional to 99,531.70, 149,297.55 and 86,701.30 is: 130,051.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,531.70 : 149,297.55 = 86,701.30 : x
  2. Step 2: Convert to fraction form
    99,531.70/149,297.55 = 86,701.30/x
  3. Step 3: Cross multiply
    99,531.70x = 149,297.55 × 86,701.30
  4. Step 4: Simplify right side
    99,531.70x = 12,944,291,671.82
  5. Step 5: Solve for x
    x = 12,944,291,671.82/99,531.70
  6. Step 6: Final answer
    x = 130,051.95

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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.