Home / 153,902.46-212,328.36-90,217.02

Finding the Fourth Proportional to 153,902.46, 212,328.36 and 90,217.02

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Solution

The fourth proportional to 153,902.46, 212,328.36 and 90,217.02 is: 124,466.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,902.46 : 212,328.36 = 90,217.02 : x
  2. Step 2: Convert to fraction form
    153,902.46/212,328.36 = 90,217.02/x
  3. Step 3: Cross multiply
    153,902.46x = 212,328.36 × 90,217.02
  4. Step 4: Simplify right side
    153,902.46x = 19,155,631,900.69
  5. Step 5: Solve for x
    x = 19,155,631,900.69/153,902.46
  6. Step 6: Final answer
    x = 124,466.05

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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.