Home / 128,771.02-193,140.12-49,831.24

Finding the Fourth Proportional to 128,771.02, 193,140.12 and 49,831.24

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Solution

The fourth proportional to 128,771.02, 193,140.12 and 49,831.24 is: 74,740.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,771.02 : 193,140.12 = 49,831.24 : x
  2. Step 2: Convert to fraction form
    128,771.02/193,140.12 = 49,831.24/x
  3. Step 3: Cross multiply
    128,771.02x = 193,140.12 × 49,831.24
  4. Step 4: Simplify right side
    128,771.02x = 9,624,411,673.35
  5. Step 5: Solve for x
    x = 9,624,411,673.35/128,771.02
  6. Step 6: Final answer
    x = 74,740.51

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1.5x scale

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.