Home / 111,407,591.20-167,111,386.80-87,221,120.80

Finding the Fourth Proportional to 111,407,591.20, 167,111,386.80 and 87,221,120.80

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Solution

The fourth proportional to 111,407,591.20, 167,111,386.80 and 87,221,120.80 is: 130,831,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,407,591.20 : 167,111,386.80 = 87,221,120.80 : x
  2. Step 2: Convert to fraction form
    111,407,591.20/167,111,386.80 = 87,221,120.80/x
  3. Step 3: Cross multiply
    111,407,591.20x = 167,111,386.80 × 87,221,120.80
  4. Step 4: Simplify right side
    111,407,591.20x = 14,575,642,455,138,326
  5. Step 5: Solve for x
    x = 14,575,642,455,138,326/111,407,591.20
  6. Step 6: Final answer
    x = 130,831,681.20

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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.