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Finding the Fourth Proportional to 122,368.40, 168,868.52 and 71,416.16

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Solution

The fourth proportional to 122,368.40, 168,868.52 and 71,416.16 is: 98,554.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,368.40 : 168,868.52 = 71,416.16 : x
  2. Step 2: Convert to fraction form
    122,368.40/168,868.52 = 71,416.16/x
  3. Step 3: Cross multiply
    122,368.40x = 168,868.52 × 71,416.16
  4. Step 4: Simplify right side
    122,368.40x = 12,059,941,243.28
  5. Step 5: Solve for x
    x = 12,059,941,243.28/122,368.40
  6. Step 6: Final answer
    x = 98,554.38

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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.