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Finding the Fourth Proportional to 158,012.94, 218,004.44 and 89,981.69

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Solution

The fourth proportional to 158,012.94, 218,004.44 and 89,981.69 is: 124,144.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,012.94 : 218,004.44 = 89,981.69 : x
  2. Step 2: Convert to fraction form
    158,012.94/218,004.44 = 89,981.69/x
  3. Step 3: Cross multiply
    158,012.94x = 218,004.44 × 89,981.69
  4. Step 4: Simplify right side
    158,012.94x = 19,616,406,398.77
  5. Step 5: Solve for x
    x = 19,616,406,398.77/158,012.94
  6. Step 6: Final answer
    x = 124,144.30

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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.