Home / 190,667.55-285,831.35-72,421.93

Finding the Fourth Proportional to 190,667.55, 285,831.35 and 72,421.93

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Solution

The fourth proportional to 190,667.55, 285,831.35 and 72,421.93 is: 108,568.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,667.55 : 285,831.35 = 72,421.93 : x
  2. Step 2: Convert to fraction form
    190,667.55/285,831.35 = 72,421.93/x
  3. Step 3: Cross multiply
    190,667.55x = 285,831.35 × 72,421.93
  4. Step 4: Simplify right side
    190,667.55x = 20,700,458,021.51
  5. Step 5: Solve for x
    x = 20,700,458,021.51/190,667.55
  6. Step 6: Final answer
    x = 108,568.33

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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.