Home / 107,928.20-161,892.30-70,603.40

Finding the Fourth Proportional to 107,928.20, 161,892.30 and 70,603.40

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Solution

The fourth proportional to 107,928.20, 161,892.30 and 70,603.40 is: 105,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,928.20 : 161,892.30 = 70,603.40 : x
  2. Step 2: Convert to fraction form
    107,928.20/161,892.30 = 70,603.40/x
  3. Step 3: Cross multiply
    107,928.20x = 161,892.30 × 70,603.40
  4. Step 4: Simplify right side
    107,928.20x = 11,430,146,813.82
  5. Step 5: Solve for x
    x = 11,430,146,813.82/107,928.20
  6. Step 6: Final answer
    x = 105,905.10

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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.