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Finding the Fourth Proportional to 100,653.72, 150,980.64 and 98,998.92

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Solution

The fourth proportional to 100,653.72, 150,980.64 and 98,998.92 is: 148,498.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,653.72 : 150,980.64 = 98,998.92 : x
  2. Step 2: Convert to fraction form
    100,653.72/150,980.64 = 98,998.92/x
  3. Step 3: Cross multiply
    100,653.72x = 150,980.64 × 98,998.92
  4. Step 4: Simplify right side
    100,653.72x = 14,946,920,300.91
  5. Step 5: Solve for x
    x = 14,946,920,300.91/100,653.72
  6. Step 6: Final answer
    x = 148,498.44

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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.