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Finding the Fourth Proportional to 134,963.60, 186,240.39 and 74,533.72

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Solution

The fourth proportional to 134,963.60, 186,240.39 and 74,533.72 is: 102,851.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,963.60 : 186,240.39 = 74,533.72 : x
  2. Step 2: Convert to fraction form
    134,963.60/186,240.39 = 74,533.72/x
  3. Step 3: Cross multiply
    134,963.60x = 186,240.39 × 74,533.72
  4. Step 4: Simplify right side
    134,963.60x = 13,881,189,080.95
  5. Step 5: Solve for x
    x = 13,881,189,080.95/134,963.60
  6. Step 6: Final answer
    x = 102,851.35

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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.