Home / 100,350.63-138,495.83-57,908.25

Finding the Fourth Proportional to 100,350.63, 138,495.83 and 57,908.25

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Solution

The fourth proportional to 100,350.63, 138,495.83 and 57,908.25 is: 79,920.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,350.63 : 138,495.83 = 57,908.25 : x
  2. Step 2: Convert to fraction form
    100,350.63/138,495.83 = 57,908.25/x
  3. Step 3: Cross multiply
    100,350.63x = 138,495.83 × 57,908.25
  4. Step 4: Simplify right side
    100,350.63x = 8,020,050,858.06
  5. Step 5: Solve for x
    x = 8,020,050,858.06/100,350.63
  6. Step 6: Final answer
    x = 79,920.28

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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.