Home / 127,780.86-191,699.50-39,041.30

Finding the Fourth Proportional to 127,780.86, 191,699.50 and 39,041.30

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Solution

The fourth proportional to 127,780.86, 191,699.50 and 39,041.30 is: 58,570.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,780.86 : 191,699.50 = 39,041.30 : x
  2. Step 2: Convert to fraction form
    127,780.86/191,699.50 = 39,041.30/x
  3. Step 3: Cross multiply
    127,780.86x = 191,699.50 × 39,041.30
  4. Step 4: Simplify right side
    127,780.86x = 7,484,197,689.35
  5. Step 5: Solve for x
    x = 7,484,197,689.35/127,780.86
  6. Step 6: Final answer
    x = 58,570.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.