Home / 157,831.10-217,811.52-86,212.25

Finding the Fourth Proportional to 157,831.10, 217,811.52 and 86,212.25

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Solution

The fourth proportional to 157,831.10, 217,811.52 and 86,212.25 is: 118,975.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,831.10 : 217,811.52 = 86,212.25 : x
  2. Step 2: Convert to fraction form
    157,831.10/217,811.52 = 86,212.25/x
  3. Step 3: Cross multiply
    157,831.10x = 217,811.52 × 86,212.25
  4. Step 4: Simplify right side
    157,831.10x = 18,778,020,126.06
  5. Step 5: Solve for x
    x = 18,778,020,126.06/157,831.10
  6. Step 6: Final answer
    x = 118,975.42

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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.