Home / 123,435.20-185,152.80-113,812.40

Finding the Fourth Proportional to 123,435.20, 185,152.80 and 113,812.40

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Solution

The fourth proportional to 123,435.20, 185,152.80 and 113,812.40 is: 170,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,435.20 : 185,152.80 = 113,812.40 : x
  2. Step 2: Convert to fraction form
    123,435.20/185,152.80 = 113,812.40/x
  3. Step 3: Cross multiply
    123,435.20x = 185,152.80 × 113,812.40
  4. Step 4: Simplify right side
    123,435.20x = 21,072,684,534.72
  5. Step 5: Solve for x
    x = 21,072,684,534.72/123,435.20
  6. Step 6: Final answer
    x = 170,718.60

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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.