Home / 136,501.80-188,369.64-76,072.20

Finding the Fourth Proportional to 136,501.80, 188,369.64 and 76,072.20

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Solution

The fourth proportional to 136,501.80, 188,369.64 and 76,072.20 is: 104,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,501.80 : 188,369.64 = 76,072.20 : x
  2. Step 2: Convert to fraction form
    136,501.80/188,369.64 = 76,072.20/x
  3. Step 3: Cross multiply
    136,501.80x = 188,369.64 × 76,072.20
  4. Step 4: Simplify right side
    136,501.80x = 14,329,692,928.01
  5. Step 5: Solve for x
    x = 14,329,692,928.01/136,501.80
  6. Step 6: Final answer
    x = 104,978.05

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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.