Home / 100,437.17-138,598.60-55,114.01

Finding the Fourth Proportional to 100,437.17, 138,598.60 and 55,114.01

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Solution

The fourth proportional to 100,437.17, 138,598.60 and 55,114.01 is: 76,054.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,437.17 : 138,598.60 = 55,114.01 : x
  2. Step 2: Convert to fraction form
    100,437.17/138,598.60 = 55,114.01/x
  3. Step 3: Cross multiply
    100,437.17x = 138,598.60 × 55,114.01
  4. Step 4: Simplify right side
    100,437.17x = 7,638,724,626.39
  5. Step 5: Solve for x
    x = 7,638,724,626.39/100,437.17
  6. Step 6: Final answer
    x = 76,054.76

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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.