Home / 137,778.34-190,127.63-76,528.50

Finding the Fourth Proportional to 137,778.34, 190,127.63 and 76,528.50

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Solution

The fourth proportional to 137,778.34, 190,127.63 and 76,528.50 is: 105,605.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,778.34 : 190,127.63 = 76,528.50 : x
  2. Step 2: Convert to fraction form
    137,778.34/190,127.63 = 76,528.50/x
  3. Step 3: Cross multiply
    137,778.34x = 190,127.63 × 76,528.50
  4. Step 4: Simplify right side
    137,778.34x = 14,550,180,999.17
  5. Step 5: Solve for x
    x = 14,550,180,999.17/137,778.34
  6. Step 6: Final answer
    x = 105,605.73

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1.5x scale

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.