Home / 105,901.45-158,816.90-42,705.25

Finding the Fourth Proportional to 105,901.45, 158,816.90 and 42,705.25

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Solution

The fourth proportional to 105,901.45, 158,816.90 and 42,705.25 is: 64,043.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,901.45 : 158,816.90 = 42,705.25 : x
  2. Step 2: Convert to fraction form
    105,901.45/158,816.90 = 42,705.25/x
  3. Step 3: Cross multiply
    105,901.45x = 158,816.90 × 42,705.25
  4. Step 4: Simplify right side
    105,901.45x = 6,782,315,128.45
  5. Step 5: Solve for x
    x = 6,782,315,128.45/105,901.45
  6. Step 6: Final answer
    x = 64,043.65

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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.