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Finding the Fourth Proportional to 124,812.30, 187,218.45 and 105,056.40

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Solution

The fourth proportional to 124,812.30, 187,218.45 and 105,056.40 is: 157,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,812.30 : 187,218.45 = 105,056.40 : x
  2. Step 2: Convert to fraction form
    124,812.30/187,218.45 = 105,056.40/x
  3. Step 3: Cross multiply
    124,812.30x = 187,218.45 × 105,056.40
  4. Step 4: Simplify right side
    124,812.30x = 19,668,496,370.58
  5. Step 5: Solve for x
    x = 19,668,496,370.58/124,812.30
  6. Step 6: Final answer
    x = 157,584.60

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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.