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Finding the Fourth Proportional to 158,256.08, 218,387.94 and 90,295.08

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Solution

The fourth proportional to 158,256.08, 218,387.94 and 90,295.08 is: 124,604.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,256.08 : 218,387.94 = 90,295.08 : x
  2. Step 2: Convert to fraction form
    158,256.08/218,387.94 = 90,295.08/x
  3. Step 3: Cross multiply
    158,256.08x = 218,387.94 × 90,295.08
  4. Step 4: Simplify right side
    158,256.08x = 19,719,356,513.34
  5. Step 5: Solve for x
    x = 19,719,356,513.34/158,256.08
  6. Step 6: Final answer
    x = 124,604.10

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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.