Home / 138,020.60-190,444.70-77,582.86

Finding the Fourth Proportional to 138,020.60, 190,444.70 and 77,582.86

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Solution

The fourth proportional to 138,020.60, 190,444.70 and 77,582.86 is: 107,051.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,020.60 : 190,444.70 = 77,582.86 : x
  2. Step 2: Convert to fraction form
    138,020.60/190,444.70 = 77,582.86/x
  3. Step 3: Cross multiply
    138,020.60x = 190,444.70 × 77,582.86
  4. Step 4: Simplify right side
    138,020.60x = 14,775,244,215.69
  5. Step 5: Solve for x
    x = 14,775,244,215.69/138,020.60
  6. Step 6: Final answer
    x = 107,051.01

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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.