Home / 145,905.40-218,858.10-40,724.20

Finding the Fourth Proportional to 145,905.40, 218,858.10 and 40,724.20

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Solution

The fourth proportional to 145,905.40, 218,858.10 and 40,724.20 is: 61,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,905.40 : 218,858.10 = 40,724.20 : x
  2. Step 2: Convert to fraction form
    145,905.40/218,858.10 = 40,724.20/x
  3. Step 3: Cross multiply
    145,905.40x = 218,858.10 × 40,724.20
  4. Step 4: Simplify right side
    145,905.40x = 8,912,821,036.02
  5. Step 5: Solve for x
    x = 8,912,821,036.02/145,905.40
  6. Step 6: Final answer
    x = 61,086.30

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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.