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Finding the Fourth Proportional to 101,459.32, 140,018.00 and 56,136.57

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Solution

The fourth proportional to 101,459.32, 140,018.00 and 56,136.57 is: 77,470.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,459.32 : 140,018.00 = 56,136.57 : x
  2. Step 2: Convert to fraction form
    101,459.32/140,018.00 = 56,136.57/x
  3. Step 3: Cross multiply
    101,459.32x = 140,018.00 × 56,136.57
  4. Step 4: Simplify right side
    101,459.32x = 7,860,129,977.58
  5. Step 5: Solve for x
    x = 7,860,129,977.58/101,459.32
  6. Step 6: Final answer
    x = 77,470.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.