Home / 145,817.40-218,288.70-86,622.60

Finding the Fourth Proportional to 145,817.40, 218,288.70 and 86,622.60

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Solution

The fourth proportional to 145,817.40, 218,288.70 and 86,622.60 is: 129,674.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,817.40 : 218,288.70 = 86,622.60 : x
  2. Step 2: Convert to fraction form
    145,817.40/218,288.70 = 86,622.60/x
  3. Step 3: Cross multiply
    145,817.40x = 218,288.70 × 86,622.60
  4. Step 4: Simplify right side
    145,817.40x = 18,908,734,744.62
  5. Step 5: Solve for x
    x = 18,908,734,744.62/145,817.40
  6. Step 6: Final answer
    x = 129,674.06

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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.