Home / 105,416.70-158,125.05-69,987.30

Finding the Fourth Proportional to 105,416.70, 158,125.05 and 69,987.30

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Solution

The fourth proportional to 105,416.70, 158,125.05 and 69,987.30 is: 104,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,416.70 : 158,125.05 = 69,987.30 : x
  2. Step 2: Convert to fraction form
    105,416.70/158,125.05 = 69,987.30/x
  3. Step 3: Cross multiply
    105,416.70x = 158,125.05 × 69,987.30
  4. Step 4: Simplify right side
    105,416.70x = 11,066,745,311.87
  5. Step 5: Solve for x
    x = 11,066,745,311.87/105,416.70
  6. Step 6: Final answer
    x = 104,980.95

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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.