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Finding the Fourth Proportional to 145,856.08, 201,299.72 and 85,449.77

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Solution

The fourth proportional to 145,856.08, 201,299.72 and 85,449.77 is: 117,931.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,856.08 : 201,299.72 = 85,449.77 : x
  2. Step 2: Convert to fraction form
    145,856.08/201,299.72 = 85,449.77/x
  3. Step 3: Cross multiply
    145,856.08x = 201,299.72 × 85,449.77
  4. Step 4: Simplify right side
    145,856.08x = 17,201,014,775.06
  5. Step 5: Solve for x
    x = 17,201,014,775.06/145,856.08
  6. Step 6: Final answer
    x = 117,931.42

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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.