Home / 153,785.53-212,224.26-90,123.40

Finding the Fourth Proportional to 153,785.53, 212,224.26 and 90,123.40

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Solution

The fourth proportional to 153,785.53, 212,224.26 and 90,123.40 is: 124,370.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,785.53 : 212,224.26 = 90,123.40 : x
  2. Step 2: Convert to fraction form
    153,785.53/212,224.26 = 90,123.40/x
  3. Step 3: Cross multiply
    153,785.53x = 212,224.26 × 90,123.40
  4. Step 4: Simplify right side
    153,785.53x = 19,126,371,873.68
  5. Step 5: Solve for x
    x = 19,126,371,873.68/153,785.53
  6. Step 6: Final answer
    x = 124,370.43

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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.