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Finding the Fourth Proportional to 98,618.40, 147,927.60 and 91,015.20

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Solution

The fourth proportional to 98,618.40, 147,927.60 and 91,015.20 is: 136,522.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,618.40 : 147,927.60 = 91,015.20 : x
  2. Step 2: Convert to fraction form
    98,618.40/147,927.60 = 91,015.20/x
  3. Step 3: Cross multiply
    98,618.40x = 147,927.60 × 91,015.20
  4. Step 4: Simplify right side
    98,618.40x = 13,463,660,099.52
  5. Step 5: Solve for x
    x = 13,463,660,099.52/98,618.40
  6. Step 6: Final answer
    x = 136,522.80

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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.