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Finding the Fourth Proportional to 75,216.45, 105,106.20 and 75,216.45

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Solution

The fourth proportional to 75,216.45, 105,106.20 and 75,216.45 is: 105,106.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,216.45 : 105,106.20 = 75,216.45 : x
  2. Step 2: Convert to fraction form
    75,216.45/105,106.20 = 75,216.45/x
  3. Step 3: Cross multiply
    75,216.45x = 105,106.20 × 75,216.45
  4. Step 4: Simplify right side
    75,216.45x = 7,905,715,236.99
  5. Step 5: Solve for x
    x = 7,905,715,236.99/75,216.45
  6. Step 6: Final answer
    x = 105,106.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.