Home / 147,831.40-221,747.10-72,987.40

Finding the Fourth Proportional to 147,831.40, 221,747.10 and 72,987.40

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Solution

The fourth proportional to 147,831.40, 221,747.10 and 72,987.40 is: 109,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,831.40 : 221,747.10 = 72,987.40 : x
  2. Step 2: Convert to fraction form
    147,831.40/221,747.10 = 72,987.40/x
  3. Step 3: Cross multiply
    147,831.40x = 221,747.10 × 72,987.40
  4. Step 4: Simplify right side
    147,831.40x = 16,184,744,286.54
  5. Step 5: Solve for x
    x = 16,184,744,286.54/147,831.40
  6. Step 6: Final answer
    x = 109,481.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.