Home / 128,947,958.70-193,421,938.05-117,043,680.30

Finding the Fourth Proportional to 128,947,958.70, 193,421,938.05 and 117,043,680.30

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Solution

The fourth proportional to 128,947,958.70, 193,421,938.05 and 117,043,680.30 is: 175,565,520.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,947,958.70 : 193,421,938.05 = 117,043,680.30 : x
  2. Step 2: Convert to fraction form
    128,947,958.70/193,421,938.05 = 117,043,680.30/x
  3. Step 3: Cross multiply
    128,947,958.70x = 193,421,938.05 × 117,043,680.30
  4. Step 4: Simplify right side
    128,947,958.70x = 22,638,815,480,130,608
  5. Step 5: Solve for x
    x = 22,638,815,480,130,608/128,947,958.70
  6. Step 6: Final answer
    x = 175,565,520.45

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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.