Home / 128,188.90-176,904.26-70,831.94

Finding the Fourth Proportional to 128,188.90, 176,904.26 and 70,831.94

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Solution

The fourth proportional to 128,188.90, 176,904.26 and 70,831.94 is: 97,750.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,188.90 : 176,904.26 = 70,831.94 : x
  2. Step 2: Convert to fraction form
    128,188.90/176,904.26 = 70,831.94/x
  3. Step 3: Cross multiply
    128,188.90x = 176,904.26 × 70,831.94
  4. Step 4: Simplify right side
    128,188.90x = 12,530,470,691.38
  5. Step 5: Solve for x
    x = 12,530,470,691.38/128,188.90
  6. Step 6: Final answer
    x = 97,750.04

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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.