Home / 145,157.82-200,312.65-81,498.30

Finding the Fourth Proportional to 145,157.82, 200,312.65 and 81,498.30

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Solution

The fourth proportional to 145,157.82, 200,312.65 and 81,498.30 is: 112,464.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,157.82 : 200,312.65 = 81,498.30 : x
  2. Step 2: Convert to fraction form
    145,157.82/200,312.65 = 81,498.30/x
  3. Step 3: Cross multiply
    145,157.82x = 200,312.65 × 81,498.30
  4. Step 4: Simplify right side
    145,157.82x = 16,325,139,335.77
  5. Step 5: Solve for x
    x = 16,325,139,335.77/145,157.82
  6. Step 6: Final answer
    x = 112,464.76

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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.