Home / 100,688.10-150,902.55-61,203.30

Finding the Fourth Proportional to 100,688.10, 150,902.55 and 61,203.30

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Solution

The fourth proportional to 100,688.10, 150,902.55 and 61,203.30 is: 91,726.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,688.10 : 150,902.55 = 61,203.30 : x
  2. Step 2: Convert to fraction form
    100,688.10/150,902.55 = 61,203.30/x
  3. Step 3: Cross multiply
    100,688.10x = 150,902.55 × 61,203.30
  4. Step 4: Simplify right side
    100,688.10x = 9,235,734,038.42
  5. Step 5: Solve for x
    x = 9,235,734,038.42/100,688.10
  6. Step 6: Final answer
    x = 91,726.17

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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.