Home / 149,258.39-205,973.61-81,276.17

Finding the Fourth Proportional to 149,258.39, 205,973.61 and 81,276.17

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Solution

The fourth proportional to 149,258.39, 205,973.61 and 81,276.17 is: 112,159.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,258.39 : 205,973.61 = 81,276.17 : x
  2. Step 2: Convert to fraction form
    149,258.39/205,973.61 = 81,276.17/x
  3. Step 3: Cross multiply
    149,258.39x = 205,973.61 × 81,276.17
  4. Step 4: Simplify right side
    149,258.39x = 16,740,746,141.87
  5. Step 5: Solve for x
    x = 16,740,746,141.87/149,258.39
  6. Step 6: Final answer
    x = 112,159.50

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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.