Home / 153,238,928.40-211,474,212.90-83,628,784.92

Finding the Fourth Proportional to 153,238,928.40, 211,474,212.90 and 83,628,784.92

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Solution

The fourth proportional to 153,238,928.40, 211,474,212.90 and 83,628,784.92 is: 115,410,174.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,238,928.40 : 211,474,212.90 = 83,628,784.92 : x
  2. Step 2: Convert to fraction form
    153,238,928.40/211,474,212.90 = 83,628,784.92/x
  3. Step 3: Cross multiply
    153,238,928.40x = 211,474,212.90 × 83,628,784.92
  4. Step 4: Simplify right side
    153,238,928.40x = 17,685,331,466,740,390
  5. Step 5: Solve for x
    x = 17,685,331,466,740,390/153,238,928.40
  6. Step 6: Final answer
    x = 115,410,174.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.