Home / 102,138.55-153,226.65-45,980.03

Finding the Fourth Proportional to 102,138.55, 153,226.65 and 45,980.03

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Solution

The fourth proportional to 102,138.55, 153,226.65 and 45,980.03 is: 68,978.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,138.55 : 153,226.65 = 45,980.03 : x
  2. Step 2: Convert to fraction form
    102,138.55/153,226.65 = 45,980.03/x
  3. Step 3: Cross multiply
    102,138.55x = 153,226.65 × 45,980.03
  4. Step 4: Simplify right side
    102,138.55x = 7,045,365,963.80
  5. Step 5: Solve for x
    x = 7,045,365,963.80/102,138.55
  6. Step 6: Final answer
    x = 68,978.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.