Home / 121,931,101.44-168,404,569.92-80,301,261.12

Finding the Fourth Proportional to 121,931,101.44, 168,404,569.92 and 80,301,261.12

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Solution

The fourth proportional to 121,931,101.44, 168,404,569.92 and 80,301,261.12 is: 110,907,710.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,931,101.44 : 168,404,569.92 = 80,301,261.12 : x
  2. Step 2: Convert to fraction form
    121,931,101.44/168,404,569.92 = 80,301,261.12/x
  3. Step 3: Cross multiply
    121,931,101.44x = 168,404,569.92 × 80,301,261.12
  4. Step 4: Simplify right side
    121,931,101.44x = 13,523,099,342,947,218
  5. Step 5: Solve for x
    x = 13,523,099,342,947,218/121,931,101.44
  6. Step 6: Final answer
    x = 110,907,710.86

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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.