Home / 153,964.90-212,467.41-85,979.98

Finding the Fourth Proportional to 153,964.90, 212,467.41 and 85,979.98

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Solution

The fourth proportional to 153,964.90, 212,467.41 and 85,979.98 is: 118,650.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,964.90 : 212,467.41 = 85,979.98 : x
  2. Step 2: Convert to fraction form
    153,964.90/212,467.41 = 85,979.98/x
  3. Step 3: Cross multiply
    153,964.90x = 212,467.41 × 85,979.98
  4. Step 4: Simplify right side
    153,964.90x = 18,267,943,662.45
  5. Step 5: Solve for x
    x = 18,267,943,662.45/153,964.90
  6. Step 6: Final answer
    x = 118,650.05

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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.