Home / 135,681.76-187,252.32-75,271.86

Finding the Fourth Proportional to 135,681.76, 187,252.32 and 75,271.86

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Solution

The fourth proportional to 135,681.76, 187,252.32 and 75,271.86 is: 103,881.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,681.76 : 187,252.32 = 75,271.86 : x
  2. Step 2: Convert to fraction form
    135,681.76/187,252.32 = 75,271.86/x
  3. Step 3: Cross multiply
    135,681.76x = 187,252.32 × 75,271.86
  4. Step 4: Simplify right side
    135,681.76x = 14,094,830,415.72
  5. Step 5: Solve for x
    x = 14,094,830,415.72/135,681.76
  6. Step 6: Final answer
    x = 103,881.54

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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.