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Finding the Fourth Proportional to 180,051.72, 248,485.92 and 99,486.30

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Solution

The fourth proportional to 180,051.72, 248,485.92 and 99,486.30 is: 137,299.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,051.72 : 248,485.92 = 99,486.30 : x
  2. Step 2: Convert to fraction form
    180,051.72/248,485.92 = 99,486.30/x
  3. Step 3: Cross multiply
    180,051.72x = 248,485.92 × 99,486.30
  4. Step 4: Simplify right side
    180,051.72x = 24,720,944,782.90
  5. Step 5: Solve for x
    x = 24,720,944,782.90/180,051.72
  6. Step 6: Final answer
    x = 137,299.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.