Home / 137,981.60-190,412.34-76,725.35

Finding the Fourth Proportional to 137,981.60, 190,412.34 and 76,725.35

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Solution

The fourth proportional to 137,981.60, 190,412.34 and 76,725.35 is: 105,879.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,981.60 : 190,412.34 = 76,725.35 : x
  2. Step 2: Convert to fraction form
    137,981.60/190,412.34 = 76,725.35/x
  3. Step 3: Cross multiply
    137,981.60x = 190,412.34 × 76,725.35
  4. Step 4: Simplify right side
    137,981.60x = 14,609,453,430.82
  5. Step 5: Solve for x
    x = 14,609,453,430.82/137,981.60
  6. Step 6: Final answer
    x = 105,879.72

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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.