Home / 153,933.20-212,476.20-90,296.72

Finding the Fourth Proportional to 153,933.20, 212,476.20 and 90,296.72

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Solution

The fourth proportional to 153,933.20, 212,476.20 and 90,296.72 is: 124,637.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,933.20 : 212,476.20 = 90,296.72 : x
  2. Step 2: Convert to fraction form
    153,933.20/212,476.20 = 90,296.72/x
  3. Step 3: Cross multiply
    153,933.20x = 212,476.20 × 90,296.72
  4. Step 4: Simplify right side
    153,933.20x = 19,185,903,938.06
  5. Step 5: Solve for x
    x = 19,185,903,938.06/153,933.20
  6. Step 6: Final answer
    x = 124,637.86

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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.