Home / 86,927,905.40-130,391,858.10-85,584,212.60

Finding the Fourth Proportional to 86,927,905.40, 130,391,858.10 and 85,584,212.60

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Solution

The fourth proportional to 86,927,905.40, 130,391,858.10 and 85,584,212.60 is: 128,376,318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,927,905.40 : 130,391,858.10 = 85,584,212.60 : x
  2. Step 2: Convert to fraction form
    86,927,905.40/130,391,858.10 = 85,584,212.60/x
  3. Step 3: Cross multiply
    86,927,905.40x = 130,391,858.10 × 85,584,212.60
  4. Step 4: Simplify right side
    86,927,905.40x = 11,159,484,504,939,430
  5. Step 5: Solve for x
    x = 11,159,484,504,939,430/86,927,905.40
  6. Step 6: Final answer
    x = 128,376,318.90

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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.