Home / 155,360.10-214,364.79-90,816.87

Finding the Fourth Proportional to 155,360.10, 214,364.79 and 90,816.87

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Solution

The fourth proportional to 155,360.10, 214,364.79 and 90,816.87 is: 125,308.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,360.10 : 214,364.79 = 90,816.87 : x
  2. Step 2: Convert to fraction form
    155,360.10/214,364.79 = 90,816.87/x
  3. Step 3: Cross multiply
    155,360.10x = 214,364.79 × 90,816.87
  4. Step 4: Simplify right side
    155,360.10x = 19,467,938,462.14
  5. Step 5: Solve for x
    x = 19,467,938,462.14/155,360.10
  6. Step 6: Final answer
    x = 125,308.49

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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.