Home / 145,939.20-218,908.80-83,558.40

Finding the Fourth Proportional to 145,939.20, 218,908.80 and 83,558.40

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Solution

The fourth proportional to 145,939.20, 218,908.80 and 83,558.40 is: 125,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,939.20 : 218,908.80 = 83,558.40 : x
  2. Step 2: Convert to fraction form
    145,939.20/218,908.80 = 83,558.40/x
  3. Step 3: Cross multiply
    145,939.20x = 218,908.80 × 83,558.40
  4. Step 4: Simplify right side
    145,939.20x = 18,291,669,073.92
  5. Step 5: Solve for x
    x = 18,291,669,073.92/145,939.20
  6. Step 6: Final answer
    x = 125,337.60

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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.