Home / 120,185,984.06-180,278,695.74-78,947,169.26

Finding the Fourth Proportional to 120,185,984.06, 180,278,695.74 and 78,947,169.26

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Solution

The fourth proportional to 120,185,984.06, 180,278,695.74 and 78,947,169.26 is: 118,420,569.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,185,984.06 : 180,278,695.74 = 78,947,169.26 : x
  2. Step 2: Convert to fraction form
    120,185,984.06/180,278,695.74 = 78,947,169.26/x
  3. Step 3: Cross multiply
    120,185,984.06x = 180,278,695.74 × 78,947,169.26
  4. Step 4: Simplify right side
    120,185,984.06x = 14,232,492,706,557,822
  5. Step 5: Solve for x
    x = 14,232,492,706,557,822/120,185,984.06
  6. Step 6: Final answer
    x = 118,420,569.74

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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.