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Finding the Fourth Proportional to 135,632.81, 187,192.64 and 75,216.89

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Solution

The fourth proportional to 135,632.81, 187,192.64 and 75,216.89 is: 103,810.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,632.81 : 187,192.64 = 75,216.89 : x
  2. Step 2: Convert to fraction form
    135,632.81/187,192.64 = 75,216.89/x
  3. Step 3: Cross multiply
    135,632.81x = 187,192.64 × 75,216.89
  4. Step 4: Simplify right side
    135,632.81x = 14,080,047,463.77
  5. Step 5: Solve for x
    x = 14,080,047,463.77/135,632.81
  6. Step 6: Final answer
    x = 103,810.04

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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.