Home / 121,526.80-182,290.20-74,287.60

Finding the Fourth Proportional to 121,526.80, 182,290.20 and 74,287.60

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Solution

The fourth proportional to 121,526.80, 182,290.20 and 74,287.60 is: 111,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,526.80 : 182,290.20 = 74,287.60 : x
  2. Step 2: Convert to fraction form
    121,526.80/182,290.20 = 74,287.60/x
  3. Step 3: Cross multiply
    121,526.80x = 182,290.20 × 74,287.60
  4. Step 4: Simplify right side
    121,526.80x = 13,541,901,461.52
  5. Step 5: Solve for x
    x = 13,541,901,461.52/121,526.80
  6. Step 6: Final answer
    x = 111,431.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.