Home / 149,162.40-205,848.72-81,184.32

Finding the Fourth Proportional to 149,162.40, 205,848.72 and 81,184.32

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Solution

The fourth proportional to 149,162.40, 205,848.72 and 81,184.32 is: 112,036.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,162.40 : 205,848.72 = 81,184.32 : x
  2. Step 2: Convert to fraction form
    149,162.40/205,848.72 = 81,184.32/x
  3. Step 3: Cross multiply
    149,162.40x = 205,848.72 × 81,184.32
  4. Step 4: Simplify right side
    149,162.40x = 16,711,688,356.07
  5. Step 5: Solve for x
    x = 16,711,688,356.07/149,162.40
  6. Step 6: Final answer
    x = 112,036.87

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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.