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Finding the Fourth Proportional to 98,286.40, 147,429.60 and 39,118.40

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Solution

The fourth proportional to 98,286.40, 147,429.60 and 39,118.40 is: 58,677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,286.40 : 147,429.60 = 39,118.40 : x
  2. Step 2: Convert to fraction form
    98,286.40/147,429.60 = 39,118.40/x
  3. Step 3: Cross multiply
    98,286.40x = 147,429.60 × 39,118.40
  4. Step 4: Simplify right side
    98,286.40x = 5,767,210,064.64
  5. Step 5: Solve for x
    x = 5,767,210,064.64/98,286.40
  6. Step 6: Final answer
    x = 58,677.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.