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Finding the Fourth Proportional to 98,157.42, 146,571.12 and 77,940.05

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Solution

The fourth proportional to 98,157.42, 146,571.12 and 77,940.05 is: 116,382.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,157.42 : 146,571.12 = 77,940.05 : x
  2. Step 2: Convert to fraction form
    98,157.42/146,571.12 = 77,940.05/x
  3. Step 3: Cross multiply
    98,157.42x = 146,571.12 × 77,940.05
  4. Step 4: Simplify right side
    98,157.42x = 11,423,759,688.50
  5. Step 5: Solve for x
    x = 11,423,759,688.50/98,157.42
  6. Step 6: Final answer
    x = 116,382.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.