Home / 128,304.08-177,071.88-74,584.40

Finding the Fourth Proportional to 128,304.08, 177,071.88 and 74,584.40

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Solution

The fourth proportional to 128,304.08, 177,071.88 and 74,584.40 is: 102,933.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304.08 : 177,071.88 = 74,584.40 : x
  2. Step 2: Convert to fraction form
    128,304.08/177,071.88 = 74,584.40/x
  3. Step 3: Cross multiply
    128,304.08x = 177,071.88 × 74,584.40
  4. Step 4: Simplify right side
    128,304.08x = 13,206,799,926.67
  5. Step 5: Solve for x
    x = 13,206,799,926.67/128,304.08
  6. Step 6: Final answer
    x = 102,933.59

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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.