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Finding the Fourth Proportional to 153,484.56, 211,805.46 and 85,501.44

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Solution

The fourth proportional to 153,484.56, 211,805.46 and 85,501.44 is: 117,990.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,484.56 : 211,805.46 = 85,501.44 : x
  2. Step 2: Convert to fraction form
    153,484.56/211,805.46 = 85,501.44/x
  3. Step 3: Cross multiply
    153,484.56x = 211,805.46 × 85,501.44
  4. Step 4: Simplify right side
    153,484.56x = 18,109,671,829.86
  5. Step 5: Solve for x
    x = 18,109,671,829.86/153,484.56
  6. Step 6: Final answer
    x = 117,990.19

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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.