Home / 145,523.08-200,820.02-81,861.32

Finding the Fourth Proportional to 145,523.08, 200,820.02 and 81,861.32

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Solution

The fourth proportional to 145,523.08, 200,820.02 and 81,861.32 is: 112,967.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,523.08 : 200,820.02 = 81,861.32 : x
  2. Step 2: Convert to fraction form
    145,523.08/200,820.02 = 81,861.32/x
  3. Step 3: Cross multiply
    145,523.08x = 200,820.02 × 81,861.32
  4. Step 4: Simplify right side
    145,523.08x = 16,439,391,919.63
  5. Step 5: Solve for x
    x = 16,439,391,919.63/145,523.08
  6. Step 6: Final answer
    x = 112,967.59

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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.