Home / 133,106.88-183,688.05-72,678.86

Finding the Fourth Proportional to 133,106.88, 183,688.05 and 72,678.86

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Solution

The fourth proportional to 133,106.88, 183,688.05 and 72,678.86 is: 100,297.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,106.88 : 183,688.05 = 72,678.86 : x
  2. Step 2: Convert to fraction form
    133,106.88/183,688.05 = 72,678.86/x
  3. Step 3: Cross multiply
    133,106.88x = 183,688.05 × 72,678.86
  4. Step 4: Simplify right side
    133,106.88x = 13,350,238,069.62
  5. Step 5: Solve for x
    x = 13,350,238,069.62/133,106.88
  6. Step 6: Final answer
    x = 100,297.13

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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.