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Finding the Fourth Proportional to 101,459.95, 140,018.86 and 56,137.20

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Solution

The fourth proportional to 101,459.95, 140,018.86 and 56,137.20 is: 77,471.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,459.95 : 140,018.86 = 56,137.20 : x
  2. Step 2: Convert to fraction form
    101,459.95/140,018.86 = 56,137.20/x
  3. Step 3: Cross multiply
    101,459.95x = 140,018.86 × 56,137.20
  4. Step 4: Simplify right side
    101,459.95x = 7,860,265,907.15
  5. Step 5: Solve for x
    x = 7,860,265,907.15/101,459.95
  6. Step 6: Final answer
    x = 77,471.61

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1.5x scale

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.