Home / 136,403.68-188,237.64-79,804.12

Finding the Fourth Proportional to 136,403.68, 188,237.64 and 79,804.12

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Solution

The fourth proportional to 136,403.68, 188,237.64 and 79,804.12 is: 110,130.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,403.68 : 188,237.64 = 79,804.12 : x
  2. Step 2: Convert to fraction form
    136,403.68/188,237.64 = 79,804.12/x
  3. Step 3: Cross multiply
    136,403.68x = 188,237.64 × 79,804.12
  4. Step 4: Simplify right side
    136,403.68x = 15,022,139,211.08
  5. Step 5: Solve for x
    x = 15,022,139,211.08/136,403.68
  6. Step 6: Final answer
    x = 110,130.01

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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.