Home / 145,109.40-217,664.10-39,928.20

Finding the Fourth Proportional to 145,109.40, 217,664.10 and 39,928.20

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Solution

The fourth proportional to 145,109.40, 217,664.10 and 39,928.20 is: 59,892.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,109.40 : 217,664.10 = 39,928.20 : x
  2. Step 2: Convert to fraction form
    145,109.40/217,664.10 = 39,928.20/x
  3. Step 3: Cross multiply
    145,109.40x = 217,664.10 × 39,928.20
  4. Step 4: Simplify right side
    145,109.40x = 8,690,935,717.62
  5. Step 5: Solve for x
    x = 8,690,935,717.62/145,109.40
  6. Step 6: Final answer
    x = 59,892.30

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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.