Home / 145,165.20-217,855.80-75,008.40

Finding the Fourth Proportional to 145,165.20, 217,855.80 and 75,008.40

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Solution

The fourth proportional to 145,165.20, 217,855.80 and 75,008.40 is: 112,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,165.20 : 217,855.80 = 75,008.40 : x
  2. Step 2: Convert to fraction form
    145,165.20/217,855.80 = 75,008.40/x
  3. Step 3: Cross multiply
    145,165.20x = 217,855.80 × 75,008.40
  4. Step 4: Simplify right side
    145,165.20x = 16,341,014,988.72
  5. Step 5: Solve for x
    x = 16,341,014,988.72/145,165.20
  6. Step 6: Final answer
    x = 112,568.40

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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.