Home / 121,017.60-181,526.40-71,121.60

Finding the Fourth Proportional to 121,017.60, 181,526.40 and 71,121.60

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Solution

The fourth proportional to 121,017.60, 181,526.40 and 71,121.60 is: 106,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,017.60 : 181,526.40 = 71,121.60 : x
  2. Step 2: Convert to fraction form
    121,017.60/181,526.40 = 71,121.60/x
  3. Step 3: Cross multiply
    121,017.60x = 181,526.40 × 71,121.60
  4. Step 4: Simplify right side
    121,017.60x = 12,910,448,010.24
  5. Step 5: Solve for x
    x = 12,910,448,010.24/121,017.60
  6. Step 6: Final answer
    x = 106,682.40

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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.