Home / 136,888.02-188,899.83-76,458.38

Finding the Fourth Proportional to 136,888.02, 188,899.83 and 76,458.38

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Solution

The fourth proportional to 136,888.02, 188,899.83 and 76,458.38 is: 105,509.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,888.02 : 188,899.83 = 76,458.38 : x
  2. Step 2: Convert to fraction form
    136,888.02/188,899.83 = 76,458.38/x
  3. Step 3: Cross multiply
    136,888.02x = 188,899.83 × 76,458.38
  4. Step 4: Simplify right side
    136,888.02x = 14,442,974,039.58
  5. Step 5: Solve for x
    x = 14,442,974,039.58/136,888.02
  6. Step 6: Final answer
    x = 105,509.41

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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.