Home / 128,407,827.08-177,200,566.44-78,153,880.16

Finding the Fourth Proportional to 128,407,827.08, 177,200,566.44 and 78,153,880.16

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Solution

The fourth proportional to 128,407,827.08, 177,200,566.44 and 78,153,880.16 is: 107,850,994.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,407,827.08 : 177,200,566.44 = 78,153,880.16 : x
  2. Step 2: Convert to fraction form
    128,407,827.08/177,200,566.44 = 78,153,880.16/x
  3. Step 3: Cross multiply
    128,407,827.08x = 177,200,566.44 × 78,153,880.16
  4. Step 4: Simplify right side
    128,407,827.08x = 13,848,911,833,835,878
  5. Step 5: Solve for x
    x = 13,848,911,833,835,878/128,407,827.08
  6. Step 6: Final answer
    x = 107,850,994.36

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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.