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Finding the Fourth Proportional to 134,937.55, 186,216.72 and 74,512.06

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Solution

The fourth proportional to 134,937.55, 186,216.72 and 74,512.06 is: 102,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,937.55 : 186,216.72 = 74,512.06 : x
  2. Step 2: Convert to fraction form
    134,937.55/186,216.72 = 74,512.06/x
  3. Step 3: Cross multiply
    134,937.55x = 186,216.72 × 74,512.06
  4. Step 4: Simplify right side
    134,937.55x = 13,875,391,413.64
  5. Step 5: Solve for x
    x = 13,875,391,413.64/134,937.55
  6. Step 6: Final answer
    x = 102,828.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.