Home / 153,876.28-212,384.70-90,234.58

Finding the Fourth Proportional to 153,876.28, 212,384.70 and 90,234.58

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Solution

The fourth proportional to 153,876.28, 212,384.70 and 90,234.58 is: 124,544.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,876.28 : 212,384.70 = 90,234.58 : x
  2. Step 2: Convert to fraction form
    153,876.28/212,384.70 = 90,234.58/x
  3. Step 3: Cross multiply
    153,876.28x = 212,384.70 × 90,234.58
  4. Step 4: Simplify right side
    153,876.28x = 19,164,444,202.93
  5. Step 5: Solve for x
    x = 19,164,444,202.93/153,876.28
  6. Step 6: Final answer
    x = 124,544.50

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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.