Home / 130,403.04-179,946-76,690.08

Finding the Fourth Proportional to 130,403.04, 179,946 and 76,690.08

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Solution

The fourth proportional to 130,403.04, 179,946 and 76,690.08 is: 105,826.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,403.04 : 179,946 = 76,690.08 : x
  2. Step 2: Convert to fraction form
    130,403.04/179,946 = 76,690.08/x
  3. Step 3: Cross multiply
    130,403.04x = 179,946 × 76,690.08
  4. Step 4: Simplify right side
    130,403.04x = 13,800,073,135.68
  5. Step 5: Solve for x
    x = 13,800,073,135.68/130,403.04
  6. Step 6: Final answer
    x = 105,826.31

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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.