Home / 128,084.72-191,995.80-53,248.28

Finding the Fourth Proportional to 128,084.72, 191,995.80 and 53,248.28

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Solution

The fourth proportional to 128,084.72, 191,995.80 and 53,248.28 is: 79,817.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,084.72 : 191,995.80 = 53,248.28 : x
  2. Step 2: Convert to fraction form
    128,084.72/191,995.80 = 53,248.28/x
  3. Step 3: Cross multiply
    128,084.72x = 191,995.80 × 53,248.28
  4. Step 4: Simplify right side
    128,084.72x = 10,223,446,117.22
  5. Step 5: Solve for x
    x = 10,223,446,117.22/128,084.72
  6. Step 6: Final answer
    x = 79,817.84

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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.