Home / 128,948,109.70-193,422,164.55-117,043,831.30

Finding the Fourth Proportional to 128,948,109.70, 193,422,164.55 and 117,043,831.30

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Solution

The fourth proportional to 128,948,109.70, 193,422,164.55 and 117,043,831.30 is: 175,565,746.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,948,109.70 : 193,422,164.55 = 117,043,831.30 : x
  2. Step 2: Convert to fraction form
    128,948,109.70/193,422,164.55 = 117,043,831.30/x
  3. Step 3: Cross multiply
    128,948,109.70x = 193,422,164.55 × 117,043,831.30
  4. Step 4: Simplify right side
    128,948,109.70x = 22,638,871,197,271,040
  5. Step 5: Solve for x
    x = 22,638,871,197,271,040/128,948,109.70
  6. Step 6: Final answer
    x = 175,565,746.95

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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.