Home / 145,040.08-217,559.82-81,831.51

Finding the Fourth Proportional to 145,040.08, 217,559.82 and 81,831.51

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Solution

The fourth proportional to 145,040.08, 217,559.82 and 81,831.51 is: 122,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,040.08 : 217,559.82 = 81,831.51 : x
  2. Step 2: Convert to fraction form
    145,040.08/217,559.82 = 81,831.51/x
  3. Step 3: Cross multiply
    145,040.08x = 217,559.82 × 81,831.51
  4. Step 4: Simplify right side
    145,040.08x = 17,803,248,585.93
  5. Step 5: Solve for x
    x = 17,803,248,585.93/145,040.08
  6. Step 6: Final answer
    x = 122,747.10

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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.