Home / 121,421.80-182,132.70-116,756.20

Finding the Fourth Proportional to 121,421.80, 182,132.70 and 116,756.20

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Solution

The fourth proportional to 121,421.80, 182,132.70 and 116,756.20 is: 175,134.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,421.80 : 182,132.70 = 116,756.20 : x
  2. Step 2: Convert to fraction form
    121,421.80/182,132.70 = 116,756.20/x
  3. Step 3: Cross multiply
    121,421.80x = 182,132.70 × 116,756.20
  4. Step 4: Simplify right side
    121,421.80x = 21,265,121,947.74
  5. Step 5: Solve for x
    x = 21,265,121,947.74/121,421.80
  6. Step 6: Final answer
    x = 175,134.30

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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.