Home / 74,157.40-102,080.10-64,709.56

Finding the Fourth Proportional to 74,157.40, 102,080.10 and 64,709.56

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Solution

The fourth proportional to 74,157.40, 102,080.10 and 64,709.56 is: 89,074.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,157.40 : 102,080.10 = 64,709.56 : x
  2. Step 2: Convert to fraction form
    74,157.40/102,080.10 = 64,709.56/x
  3. Step 3: Cross multiply
    74,157.40x = 102,080.10 × 64,709.56
  4. Step 4: Simplify right side
    74,157.40x = 6,605,558,355.76
  5. Step 5: Solve for x
    x = 6,605,558,355.76/74,157.40
  6. Step 6: Final answer
    x = 89,074.84

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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.