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Finding the Fourth Proportional to 124,437.60, 186,639.60 and 49,612.80

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Solution

The fourth proportional to 124,437.60, 186,639.60 and 49,612.80 is: 74,412.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,437.60 : 186,639.60 = 49,612.80 : x
  2. Step 2: Convert to fraction form
    124,437.60/186,639.60 = 49,612.80/x
  3. Step 3: Cross multiply
    124,437.60x = 186,639.60 × 49,612.80
  4. Step 4: Simplify right side
    124,437.60x = 9,259,713,146.88
  5. Step 5: Solve for x
    x = 9,259,713,146.88/124,437.60
  6. Step 6: Final answer
    x = 74,412.50

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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.