Home / 138,152.08-190,642.05-77,725.27

Finding the Fourth Proportional to 138,152.08, 190,642.05 and 77,725.27

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Solution

The fourth proportional to 138,152.08, 190,642.05 and 77,725.27 is: 107,256.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,152.08 : 190,642.05 = 77,725.27 : x
  2. Step 2: Convert to fraction form
    138,152.08/190,642.05 = 77,725.27/x
  3. Step 3: Cross multiply
    138,152.08x = 190,642.05 × 77,725.27
  4. Step 4: Simplify right side
    138,152.08x = 14,817,704,809.60
  5. Step 5: Solve for x
    x = 14,817,704,809.60/138,152.08
  6. Step 6: Final answer
    x = 107,256.47

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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.