Home / 153,861.43-212,329.02-85,878.39

Finding the Fourth Proportional to 153,861.43, 212,329.02 and 85,878.39

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Solution

The fourth proportional to 153,861.43, 212,329.02 and 85,878.39 is: 118,512.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,861.43 : 212,329.02 = 85,878.39 : x
  2. Step 2: Convert to fraction form
    153,861.43/212,329.02 = 85,878.39/x
  3. Step 3: Cross multiply
    153,861.43x = 212,329.02 × 85,878.39
  4. Step 4: Simplify right side
    153,861.43x = 18,234,473,189.43
  5. Step 5: Solve for x
    x = 18,234,473,189.43/153,861.43
  6. Step 6: Final answer
    x = 118,512.31

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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.