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Finding the Fourth Proportional to 101,460.45, 140,019.55 and 56,137.70

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Solution

The fourth proportional to 101,460.45, 140,019.55 and 56,137.70 is: 77,472.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,460.45 : 140,019.55 = 56,137.70 : x
  2. Step 2: Convert to fraction form
    101,460.45/140,019.55 = 56,137.70/x
  3. Step 3: Cross multiply
    101,460.45x = 140,019.55 × 56,137.70
  4. Step 4: Simplify right side
    101,460.45x = 7,860,374,651.59
  5. Step 5: Solve for x
    x = 7,860,374,651.59/101,460.45
  6. Step 6: Final answer
    x = 77,472.30

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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.