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Finding the Fourth Proportional to 100,790.56, 150,438.32 and 88,980.64

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Solution

The fourth proportional to 100,790.56, 150,438.32 and 88,980.64 is: 132,811.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,790.56 : 150,438.32 = 88,980.64 : x
  2. Step 2: Convert to fraction form
    100,790.56/150,438.32 = 88,980.64/x
  3. Step 3: Cross multiply
    100,790.56x = 150,438.32 × 88,980.64
  4. Step 4: Simplify right side
    100,790.56x = 13,386,097,994.12
  5. Step 5: Solve for x
    x = 13,386,097,994.12/100,790.56
  6. Step 6: Final answer
    x = 132,811.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.