Home / 158,348.49-218,518.67-90,387.00

Finding the Fourth Proportional to 158,348.49, 218,518.67 and 90,387.00

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Solution

The fourth proportional to 158,348.49, 218,518.67 and 90,387.00 is: 124,732.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,348.49 : 218,518.67 = 90,387.00 : x
  2. Step 2: Convert to fraction form
    158,348.49/218,518.67 = 90,387.00/x
  3. Step 3: Cross multiply
    158,348.49x = 218,518.67 × 90,387.00
  4. Step 4: Simplify right side
    158,348.49x = 19,751,245,753.91
  5. Step 5: Solve for x
    x = 19,751,245,753.91/158,348.49
  6. Step 6: Final answer
    x = 124,732.77

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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.