Home / 154,831.54-213,666.66-85,920.32

Finding the Fourth Proportional to 154,831.54, 213,666.66 and 85,920.32

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Solution

The fourth proportional to 154,831.54, 213,666.66 and 85,920.32 is: 118,569.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,831.54 : 213,666.66 = 85,920.32 : x
  2. Step 2: Convert to fraction form
    154,831.54/213,666.66 = 85,920.32/x
  3. Step 3: Cross multiply
    154,831.54x = 213,666.66 × 85,920.32
  4. Step 4: Simplify right side
    154,831.54x = 18,358,307,800.53
  5. Step 5: Solve for x
    x = 18,358,307,800.53/154,831.54
  6. Step 6: Final answer
    x = 118,569.56

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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.