Home / 153,964.85-212,467.34-85,979.93

Finding the Fourth Proportional to 153,964.85, 212,467.34 and 85,979.93

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Solution

The fourth proportional to 153,964.85, 212,467.34 and 85,979.93 is: 118,649.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,964.85 : 212,467.34 = 85,979.93 : x
  2. Step 2: Convert to fraction form
    153,964.85/212,467.34 = 85,979.93/x
  3. Step 3: Cross multiply
    153,964.85x = 212,467.34 × 85,979.93
  4. Step 4: Simplify right side
    153,964.85x = 18,267,926,173.10
  5. Step 5: Solve for x
    x = 18,267,926,173.10/153,964.85
  6. Step 6: Final answer
    x = 118,649.98

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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.