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Finding the Fourth Proportional to 145,019.20, 217,528.80 and 94,280.80

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Solution

The fourth proportional to 145,019.20, 217,528.80 and 94,280.80 is: 141,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,019.20 : 217,528.80 = 94,280.80 : x
  2. Step 2: Convert to fraction form
    145,019.20/217,528.80 = 94,280.80/x
  3. Step 3: Cross multiply
    145,019.20x = 217,528.80 × 94,280.80
  4. Step 4: Simplify right side
    145,019.20x = 20,508,789,287.04
  5. Step 5: Solve for x
    x = 20,508,789,287.04/145,019.20
  6. Step 6: Final answer
    x = 141,421.20

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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.