Home / 153,812.28-212,260.70-85,825.14

Finding the Fourth Proportional to 153,812.28, 212,260.70 and 85,825.14

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Solution

The fourth proportional to 153,812.28, 212,260.70 and 85,825.14 is: 118,438.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,812.28 : 212,260.70 = 85,825.14 : x
  2. Step 2: Convert to fraction form
    153,812.28/212,260.70 = 85,825.14/x
  3. Step 3: Cross multiply
    153,812.28x = 212,260.70 × 85,825.14
  4. Step 4: Simplify right side
    153,812.28x = 18,217,303,712.58
  5. Step 5: Solve for x
    x = 18,217,303,712.58/153,812.28
  6. Step 6: Final answer
    x = 118,438.55

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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.