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Finding the Fourth Proportional to 98,136.90, 147,205.35 and 90,846.90

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Solution

The fourth proportional to 98,136.90, 147,205.35 and 90,846.90 is: 136,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,136.90 : 147,205.35 = 90,846.90 : x
  2. Step 2: Convert to fraction form
    98,136.90/147,205.35 = 90,846.90/x
  3. Step 3: Cross multiply
    98,136.90x = 147,205.35 × 90,846.90
  4. Step 4: Simplify right side
    98,136.90x = 13,373,149,710.92
  5. Step 5: Solve for x
    x = 13,373,149,710.92/98,136.90
  6. Step 6: Final answer
    x = 136,270.35

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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.