Home / 100,276.96-138,386.04-57,263.46

Finding the Fourth Proportional to 100,276.96, 138,386.04 and 57,263.46

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Solution

The fourth proportional to 100,276.96, 138,386.04 and 57,263.46 is: 79,025.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,276.96 : 138,386.04 = 57,263.46 : x
  2. Step 2: Convert to fraction form
    100,276.96/138,386.04 = 57,263.46/x
  3. Step 3: Cross multiply
    100,276.96x = 138,386.04 × 57,263.46
  4. Step 4: Simplify right side
    100,276.96x = 7,924,463,466.10
  5. Step 5: Solve for x
    x = 7,924,463,466.10/100,276.96
  6. Step 6: Final answer
    x = 79,025.76

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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.