Home / 105,051.36-144,973.08-64,784.64

Finding the Fourth Proportional to 105,051.36, 144,973.08 and 64,784.64

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Solution

The fourth proportional to 105,051.36, 144,973.08 and 64,784.64 is: 89,404.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,051.36 : 144,973.08 = 64,784.64 : x
  2. Step 2: Convert to fraction form
    105,051.36/144,973.08 = 64,784.64/x
  3. Step 3: Cross multiply
    105,051.36x = 144,973.08 × 64,784.64
  4. Step 4: Simplify right side
    105,051.36x = 9,392,028,797.49
  5. Step 5: Solve for x
    x = 9,392,028,797.49/105,051.36
  6. Step 6: Final answer
    x = 89,404.16

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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.