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Finding the Fourth Proportional to 101,352.95, 139,904.66 and 61,068.95

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Solution

The fourth proportional to 101,352.95, 139,904.66 and 61,068.95 is: 84,297.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,352.95 : 139,904.66 = 61,068.95 : x
  2. Step 2: Convert to fraction form
    101,352.95/139,904.66 = 61,068.95/x
  3. Step 3: Cross multiply
    101,352.95x = 139,904.66 × 61,068.95
  4. Step 4: Simplify right side
    101,352.95x = 8,543,830,380.96
  5. Step 5: Solve for x
    x = 8,543,830,380.96/101,352.95
  6. Step 6: Final answer
    x = 84,297.80

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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.