Home / 99,128.56-136,794.36-53,804.40

Finding the Fourth Proportional to 99,128.56, 136,794.36 and 53,804.40

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Solution

The fourth proportional to 99,128.56, 136,794.36 and 53,804.40 is: 74,248.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,128.56 : 136,794.36 = 53,804.40 : x
  2. Step 2: Convert to fraction form
    99,128.56/136,794.36 = 53,804.40/x
  3. Step 3: Cross multiply
    99,128.56x = 136,794.36 × 53,804.40
  4. Step 4: Simplify right side
    99,128.56x = 7,360,138,463.18
  5. Step 5: Solve for x
    x = 7,360,138,463.18/99,128.56
  6. Step 6: Final answer
    x = 74,248.42

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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.