Home / 121,133,038.36-167,162,742.56-66,128,894.86

Finding the Fourth Proportional to 121,133,038.36, 167,162,742.56 and 66,128,894.86

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Solution

The fourth proportional to 121,133,038.36, 167,162,742.56 and 66,128,894.86 is: 91,257,410.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,133,038.36 : 167,162,742.56 = 66,128,894.86 : x
  2. Step 2: Convert to fraction form
    121,133,038.36/167,162,742.56 = 66,128,894.86/x
  3. Step 3: Cross multiply
    121,133,038.36x = 167,162,742.56 × 66,128,894.86
  4. Step 4: Simplify right side
    121,133,038.36x = 11,054,287,427,259,488
  5. Step 5: Solve for x
    x = 11,054,287,427,259,488/121,133,038.36
  6. Step 6: Final answer
    x = 91,257,410.67

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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.