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Finding the Fourth Proportional to 121,602.57, 167,814.38 and 76,282.46

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Solution

The fourth proportional to 121,602.57, 167,814.38 and 76,282.46 is: 105,271.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,602.57 : 167,814.38 = 76,282.46 : x
  2. Step 2: Convert to fraction form
    121,602.57/167,814.38 = 76,282.46/x
  3. Step 3: Cross multiply
    121,602.57x = 167,814.38 × 76,282.46
  4. Step 4: Simplify right side
    121,602.57x = 12,801,293,710.71
  5. Step 5: Solve for x
    x = 12,801,293,710.71/121,602.57
  6. Step 6: Final answer
    x = 105,271.58

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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.