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Finding the Fourth Proportional to 98,751.74, 148,127.60 and 54,355.64

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Solution

The fourth proportional to 98,751.74, 148,127.60 and 54,355.64 is: 81,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,751.74 : 148,127.60 = 54,355.64 : x
  2. Step 2: Convert to fraction form
    98,751.74/148,127.60 = 54,355.64/x
  3. Step 3: Cross multiply
    98,751.74x = 148,127.60 × 54,355.64
  4. Step 4: Simplify right side
    98,751.74x = 8,051,570,499.66
  5. Step 5: Solve for x
    x = 8,051,570,499.66/98,751.74
  6. Step 6: Final answer
    x = 81,533.45

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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.