Home / 138,226.96-190,762.85-77,803.39

Finding the Fourth Proportional to 138,226.96, 190,762.85 and 77,803.39

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Solution

The fourth proportional to 138,226.96, 190,762.85 and 77,803.39 is: 107,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,226.96 : 190,762.85 = 77,803.39 : x
  2. Step 2: Convert to fraction form
    138,226.96/190,762.85 = 77,803.39/x
  3. Step 3: Cross multiply
    138,226.96x = 190,762.85 × 77,803.39
  4. Step 4: Simplify right side
    138,226.96x = 14,841,996,416.06
  5. Step 5: Solve for x
    x = 14,841,996,416.06/138,226.96
  6. Step 6: Final answer
    x = 107,374.11

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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.