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Finding the Fourth Proportional to 124,768.40, 187,160.70 and 65,719.40

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Solution

The fourth proportional to 124,768.40, 187,160.70 and 65,719.40 is: 98,583.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,768.40 : 187,160.70 = 65,719.40 : x
  2. Step 2: Convert to fraction form
    124,768.40/187,160.70 = 65,719.40/x
  3. Step 3: Cross multiply
    124,768.40x = 187,160.70 × 65,719.40
  4. Step 4: Simplify right side
    124,768.40x = 12,300,088,907.58
  5. Step 5: Solve for x
    x = 12,300,088,907.58/124,768.40
  6. Step 6: Final answer
    x = 98,583.37

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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.