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Finding the Fourth Proportional to 98,018.40, 147,070.80 and 45,400.80

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Solution

The fourth proportional to 98,018.40, 147,070.80 and 45,400.80 is: 68,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,018.40 : 147,070.80 = 45,400.80 : x
  2. Step 2: Convert to fraction form
    98,018.40/147,070.80 = 45,400.80/x
  3. Step 3: Cross multiply
    98,018.40x = 147,070.80 × 45,400.80
  4. Step 4: Simplify right side
    98,018.40x = 6,677,131,976.64
  5. Step 5: Solve for x
    x = 6,677,131,976.64/98,018.40
  6. Step 6: Final answer
    x = 68,121.21

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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.