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Finding the Fourth Proportional to 97,009.90, 145,514.85 and 65,905.90

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Solution

The fourth proportional to 97,009.90, 145,514.85 and 65,905.90 is: 98,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,009.90 : 145,514.85 = 65,905.90 : x
  2. Step 2: Convert to fraction form
    97,009.90/145,514.85 = 65,905.90/x
  3. Step 3: Cross multiply
    97,009.90x = 145,514.85 × 65,905.90
  4. Step 4: Simplify right side
    97,009.90x = 9,590,287,152.62
  5. Step 5: Solve for x
    x = 9,590,287,152.62/97,009.90
  6. Step 6: Final answer
    x = 98,858.85

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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.