Home / 128,758,741.40-193,138,112.10-117,043,419.80

Finding the Fourth Proportional to 128,758,741.40, 193,138,112.10 and 117,043,419.80

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Solution

The fourth proportional to 128,758,741.40, 193,138,112.10 and 117,043,419.80 is: 175,565,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,758,741.40 : 193,138,112.10 = 117,043,419.80 : x
  2. Step 2: Convert to fraction form
    128,758,741.40/193,138,112.10 = 117,043,419.80/x
  3. Step 3: Cross multiply
    128,758,741.40x = 193,138,112.10 × 117,043,419.80
  4. Step 4: Simplify right side
    128,758,741.40x = 22,605,545,133,899,760
  5. Step 5: Solve for x
    x = 22,605,545,133,899,760/128,758,741.40
  6. Step 6: Final answer
    x = 175,565,129.70

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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.