Home / 128,122-191,942.43-118,455.46

Finding the Fourth Proportional to 128,122, 191,942.43 and 118,455.46

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Solution

The fourth proportional to 128,122, 191,942.43 and 118,455.46 is: 177,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,122 : 191,942.43 = 118,455.46 : x
  2. Step 2: Convert to fraction form
    128,122/191,942.43 = 118,455.46/x
  3. Step 3: Cross multiply
    128,122x = 191,942.43 × 118,455.46
  4. Step 4: Simplify right side
    128,122x = 22,736,628,839.17
  5. Step 5: Solve for x
    x = 22,736,628,839.17/128,122
  6. Step 6: Final answer
    x = 177,460.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.