Home / 145,339.20-200,570.04-81,673.20

Finding the Fourth Proportional to 145,339.20, 200,570.04 and 81,673.20

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Solution

The fourth proportional to 145,339.20, 200,570.04 and 81,673.20 is: 112,710.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,339.20 : 200,570.04 = 81,673.20 : x
  2. Step 2: Convert to fraction form
    145,339.20/200,570.04 = 81,673.20/x
  3. Step 3: Cross multiply
    145,339.20x = 200,570.04 × 81,673.20
  4. Step 4: Simplify right side
    145,339.20x = 16,381,196,990.93
  5. Step 5: Solve for x
    x = 16,381,196,990.93/145,339.20
  6. Step 6: Final answer
    x = 112,710.11

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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.