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Finding the Fourth Proportional to 101,394.45, 139,920.30 and 56,069.46

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Solution

The fourth proportional to 101,394.45, 139,920.30 and 56,069.46 is: 77,373.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,394.45 : 139,920.30 = 56,069.46 : x
  2. Step 2: Convert to fraction form
    101,394.45/139,920.30 = 56,069.46/x
  3. Step 3: Cross multiply
    101,394.45x = 139,920.30 × 56,069.46
  4. Step 4: Simplify right side
    101,394.45x = 7,845,255,664.04
  5. Step 5: Solve for x
    x = 7,845,255,664.04/101,394.45
  6. Step 6: Final answer
    x = 77,373.62

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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.