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Finding the Fourth Proportional to 108,787, 150,131.12 and 63,457.80

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Solution

The fourth proportional to 108,787, 150,131.12 and 63,457.80 is: 87,574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,787 : 150,131.12 = 63,457.80 : x
  2. Step 2: Convert to fraction form
    108,787/150,131.12 = 63,457.80/x
  3. Step 3: Cross multiply
    108,787x = 150,131.12 × 63,457.80
  4. Step 4: Simplify right side
    108,787x = 9,526,990,586.74
  5. Step 5: Solve for x
    x = 9,526,990,586.74/108,787
  6. Step 6: Final answer
    x = 87,574.72

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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.