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Finding the Fourth Proportional to 124,357.90, 171,491.98 and 78,957.06

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Solution

The fourth proportional to 124,357.90, 171,491.98 and 78,957.06 is: 108,883.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,357.90 : 171,491.98 = 78,957.06 : x
  2. Step 2: Convert to fraction form
    124,357.90/171,491.98 = 78,957.06/x
  3. Step 3: Cross multiply
    124,357.90x = 171,491.98 × 78,957.06
  4. Step 4: Simplify right side
    124,357.90x = 13,540,502,554.38
  5. Step 5: Solve for x
    x = 13,540,502,554.38/124,357.90
  6. Step 6: Final answer
    x = 108,883.33

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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.