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Finding the Fourth Proportional to 105,087.84, 157,510.80 and 45,909.60

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Solution

The fourth proportional to 105,087.84, 157,510.80 and 45,909.60 is: 68,811.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,087.84 : 157,510.80 = 45,909.60 : x
  2. Step 2: Convert to fraction form
    105,087.84/157,510.80 = 45,909.60/x
  3. Step 3: Cross multiply
    105,087.84x = 157,510.80 × 45,909.60
  4. Step 4: Simplify right side
    105,087.84x = 7,231,257,823.68
  5. Step 5: Solve for x
    x = 7,231,257,823.68/105,087.84
  6. Step 6: Final answer
    x = 68,811.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.