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Finding the Fourth Proportional to 112,726.74, 155,562.64 and 61,739.49

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Solution

The fourth proportional to 112,726.74, 155,562.64 and 61,739.49 is: 85,200.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,726.74 : 155,562.64 = 61,739.49 : x
  2. Step 2: Convert to fraction form
    112,726.74/155,562.64 = 61,739.49/x
  3. Step 3: Cross multiply
    112,726.74x = 155,562.64 × 61,739.49
  4. Step 4: Simplify right side
    112,726.74x = 9,604,358,056.65
  5. Step 5: Solve for x
    x = 9,604,358,056.65/112,726.74
  6. Step 6: Final answer
    x = 85,200.35

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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.