Home / 112,129.28-154,743.36-64,384.64

Finding the Fourth Proportional to 112,129.28, 154,743.36 and 64,384.64

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Solution

The fourth proportional to 112,129.28, 154,743.36 and 64,384.64 is: 88,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,129.28 : 154,743.36 = 64,384.64 : x
  2. Step 2: Convert to fraction form
    112,129.28/154,743.36 = 64,384.64/x
  3. Step 3: Cross multiply
    112,129.28x = 154,743.36 × 64,384.64
  4. Step 4: Simplify right side
    112,129.28x = 9,963,095,525.99
  5. Step 5: Solve for x
    x = 9,963,095,525.99/112,129.28
  6. Step 6: Final answer
    x = 88,853.65

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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.