Home / 128,222.60-176,971.62-84,538.44

Finding the Fourth Proportional to 128,222.60, 176,971.62 and 84,538.44

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Solution

The fourth proportional to 128,222.60, 176,971.62 and 84,538.44 is: 116,679.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,222.60 : 176,971.62 = 84,538.44 : x
  2. Step 2: Convert to fraction form
    128,222.60/176,971.62 = 84,538.44/x
  3. Step 3: Cross multiply
    128,222.60x = 176,971.62 × 84,538.44
  4. Step 4: Simplify right side
    128,222.60x = 14,960,904,996.09
  5. Step 5: Solve for x
    x = 14,960,904,996.09/128,222.60
  6. Step 6: Final answer
    x = 116,679.16

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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.