Home / 107,308.80-148,055.04-79,107.84

Finding the Fourth Proportional to 107,308.80, 148,055.04 and 79,107.84

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Solution

The fourth proportional to 107,308.80, 148,055.04 and 79,107.84 is: 109,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,308.80 : 148,055.04 = 79,107.84 : x
  2. Step 2: Convert to fraction form
    107,308.80/148,055.04 = 79,107.84/x
  3. Step 3: Cross multiply
    107,308.80x = 148,055.04 × 79,107.84
  4. Step 4: Simplify right side
    107,308.80x = 11,712,314,415.51
  5. Step 5: Solve for x
    x = 11,712,314,415.51/107,308.80
  6. Step 6: Final answer
    x = 109,145.89

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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.