Home / 128,947,970.70-193,421,956.05-117,043,692.30

Finding the Fourth Proportional to 128,947,970.70, 193,421,956.05 and 117,043,692.30

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Solution

The fourth proportional to 128,947,970.70, 193,421,956.05 and 117,043,692.30 is: 175,565,538.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,947,970.70 : 193,421,956.05 = 117,043,692.30 : x
  2. Step 2: Convert to fraction form
    128,947,970.70/193,421,956.05 = 117,043,692.30/x
  3. Step 3: Cross multiply
    128,947,970.70x = 193,421,956.05 × 117,043,692.30
  4. Step 4: Simplify right side
    128,947,970.70x = 22,638,819,907,980,324
  5. Step 5: Solve for x
    x = 22,638,819,907,980,324/128,947,970.70
  6. Step 6: Final answer
    x = 175,565,538.45

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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.