Home / 212,021.20-292,533.96-136,680.40

Finding the Fourth Proportional to 212,021.20, 292,533.96 and 136,680.40

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Solution

The fourth proportional to 212,021.20, 292,533.96 and 136,680.40 is: 188,583.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,021.20 : 292,533.96 = 136,680.40 : x
  2. Step 2: Convert to fraction form
    212,021.20/292,533.96 = 136,680.40/x
  3. Step 3: Cross multiply
    212,021.20x = 292,533.96 × 136,680.40
  4. Step 4: Simplify right side
    212,021.20x = 39,983,658,666.38
  5. Step 5: Solve for x
    x = 39,983,658,666.38/212,021.20
  6. Step 6: Final answer
    x = 188,583.31

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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.