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Finding the Fourth Proportional to 145,967.67, 201,435.62 and 78,899.67

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Solution

The fourth proportional to 145,967.67, 201,435.62 and 78,899.67 is: 108,881.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967.67 : 201,435.62 = 78,899.67 : x
  2. Step 2: Convert to fraction form
    145,967.67/201,435.62 = 78,899.67/x
  3. Step 3: Cross multiply
    145,967.67x = 201,435.62 × 78,899.67
  4. Step 4: Simplify right side
    145,967.67x = 15,893,203,549.75
  5. Step 5: Solve for x
    x = 15,893,203,549.75/145,967.67
  6. Step 6: Final answer
    x = 108,881.67

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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.