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Finding the Fourth Proportional to 145,879.48, 201,302.22 and 85,442.32

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Solution

The fourth proportional to 145,879.48, 201,302.22 and 85,442.32 is: 117,903.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,879.48 : 201,302.22 = 85,442.32 : x
  2. Step 2: Convert to fraction form
    145,879.48/201,302.22 = 85,442.32/x
  3. Step 3: Cross multiply
    145,879.48x = 201,302.22 × 85,442.32
  4. Step 4: Simplify right side
    145,879.48x = 17,199,728,697.95
  5. Step 5: Solve for x
    x = 17,199,728,697.95/145,879.48
  6. Step 6: Final answer
    x = 117,903.69

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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.