Home / 145,298.80-200,512.52-81,636.56

Finding the Fourth Proportional to 145,298.80, 200,512.52 and 81,636.56

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Solution

The fourth proportional to 145,298.80, 200,512.52 and 81,636.56 is: 112,658.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,298.80 : 200,512.52 = 81,636.56 : x
  2. Step 2: Convert to fraction form
    145,298.80/200,512.52 = 81,636.56/x
  3. Step 3: Cross multiply
    145,298.80x = 200,512.52 × 81,636.56
  4. Step 4: Simplify right side
    145,298.80x = 16,369,152,369.73
  5. Step 5: Solve for x
    x = 16,369,152,369.73/145,298.80
  6. Step 6: Final answer
    x = 112,658.55

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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.