Home / 105,821.66-158,730.75-42,640.25

Finding the Fourth Proportional to 105,821.66, 158,730.75 and 42,640.25

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Solution

The fourth proportional to 105,821.66, 158,730.75 and 42,640.25 is: 63,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,821.66 : 158,730.75 = 42,640.25 : x
  2. Step 2: Convert to fraction form
    105,821.66/158,730.75 = 42,640.25/x
  3. Step 3: Cross multiply
    105,821.66x = 158,730.75 × 42,640.25
  4. Step 4: Simplify right side
    105,821.66x = 6,768,318,069.03
  5. Step 5: Solve for x
    x = 6,768,318,069.03/105,821.66
  6. Step 6: Final answer
    x = 63,959.66

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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.