Home / 109,878.40-151,518.24-94,015.36

Finding the Fourth Proportional to 109,878.40, 151,518.24 and 94,015.36

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Solution

The fourth proportional to 109,878.40, 151,518.24 and 94,015.36 is: 129,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,878.40 : 151,518.24 = 94,015.36 : x
  2. Step 2: Convert to fraction form
    109,878.40/151,518.24 = 94,015.36/x
  3. Step 3: Cross multiply
    109,878.40x = 151,518.24 × 94,015.36
  4. Step 4: Simplify right side
    109,878.40x = 14,245,041,880.17
  5. Step 5: Solve for x
    x = 14,245,041,880.17/109,878.40
  6. Step 6: Final answer
    x = 129,643.70

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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.