Home / 111,427,991.70-167,141,987.55-85,918,823.70

Finding the Fourth Proportional to 111,427,991.70, 167,141,987.55 and 85,918,823.70

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Solution

The fourth proportional to 111,427,991.70, 167,141,987.55 and 85,918,823.70 is: 128,878,235.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,427,991.70 : 167,141,987.55 = 85,918,823.70 : x
  2. Step 2: Convert to fraction form
    111,427,991.70/167,141,987.55 = 85,918,823.70/x
  3. Step 3: Cross multiply
    111,427,991.70x = 167,141,987.55 × 85,918,823.70
  4. Step 4: Simplify right side
    111,427,991.70x = 14,360,642,961,176,046
  5. Step 5: Solve for x
    x = 14,360,642,961,176,046/111,427,991.70
  6. Step 6: Final answer
    x = 128,878,235.55

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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.