Home / 145,632.42-200,972.70-81,970.56

Finding the Fourth Proportional to 145,632.42, 200,972.70 and 81,970.56

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Solution

The fourth proportional to 145,632.42, 200,972.70 and 81,970.56 is: 113,119.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,632.42 : 200,972.70 = 81,970.56 : x
  2. Step 2: Convert to fraction form
    145,632.42/200,972.70 = 81,970.56/x
  3. Step 3: Cross multiply
    145,632.42x = 200,972.70 × 81,970.56
  4. Step 4: Simplify right side
    145,632.42x = 16,473,844,763.71
  5. Step 5: Solve for x
    x = 16,473,844,763.71/145,632.42
  6. Step 6: Final answer
    x = 113,119.35

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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.