Home / 145,157.91-200,312.78-81,498.39

Finding the Fourth Proportional to 145,157.91, 200,312.78 and 81,498.39

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Solution

The fourth proportional to 145,157.91, 200,312.78 and 81,498.39 is: 112,464.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,157.91 : 200,312.78 = 81,498.39 : x
  2. Step 2: Convert to fraction form
    145,157.91/200,312.78 = 81,498.39/x
  3. Step 3: Cross multiply
    145,157.91x = 200,312.78 × 81,498.39
  4. Step 4: Simplify right side
    145,157.91x = 16,325,168,658.93
  5. Step 5: Solve for x
    x = 16,325,168,658.93/145,157.91
  6. Step 6: Final answer
    x = 112,464.89

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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.