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Finding the Fourth Proportional to 145,399.60, 218,099.40 and 75,300.40

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Solution

The fourth proportional to 145,399.60, 218,099.40 and 75,300.40 is: 112,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,399.60 : 218,099.40 = 75,300.40 : x
  2. Step 2: Convert to fraction form
    145,399.60/218,099.40 = 75,300.40/x
  3. Step 3: Cross multiply
    145,399.60x = 218,099.40 × 75,300.40
  4. Step 4: Simplify right side
    145,399.60x = 16,422,972,059.76
  5. Step 5: Solve for x
    x = 16,422,972,059.76/145,399.60
  6. Step 6: Final answer
    x = 112,950.60

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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.