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Finding the Fourth Proportional to 158,455.61, 218,674.74 and 90,483.65

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Solution

The fourth proportional to 158,455.61, 218,674.74 and 90,483.65 is: 124,870.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,455.61 : 218,674.74 = 90,483.65 : x
  2. Step 2: Convert to fraction form
    158,455.61/218,674.74 = 90,483.65/x
  3. Step 3: Cross multiply
    158,455.61x = 218,674.74 × 90,483.65
  4. Step 4: Simplify right side
    158,455.61x = 19,786,488,638.00
  5. Step 5: Solve for x
    x = 19,786,488,638.00/158,455.61
  6. Step 6: Final answer
    x = 124,870.86

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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.