Home / 130,395,975.44-179,947,513.32-81,531,729.68

Finding the Fourth Proportional to 130,395,975.44, 179,947,513.32 and 81,531,729.68

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Solution

The fourth proportional to 130,395,975.44, 179,947,513.32 and 81,531,729.68 is: 112,514,454.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,395,975.44 : 179,947,513.32 = 81,531,729.68 : x
  2. Step 2: Convert to fraction form
    130,395,975.44/179,947,513.32 = 81,531,729.68/x
  3. Step 3: Cross multiply
    130,395,975.44x = 179,947,513.32 × 81,531,729.68
  4. Step 4: Simplify right side
    130,395,975.44x = 14,671,432,012,594,440
  5. Step 5: Solve for x
    x = 14,671,432,012,594,440/130,395,975.44
  6. Step 6: Final answer
    x = 112,514,454.25

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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.