Home / 130,345.22-179,860.61-72,980.06

Finding the Fourth Proportional to 130,345.22, 179,860.61 and 72,980.06

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Solution

The fourth proportional to 130,345.22, 179,860.61 and 72,980.06 is: 100,703.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,345.22 : 179,860.61 = 72,980.06 : x
  2. Step 2: Convert to fraction form
    130,345.22/179,860.61 = 72,980.06/x
  3. Step 3: Cross multiply
    130,345.22x = 179,860.61 × 72,980.06
  4. Step 4: Simplify right side
    130,345.22x = 13,126,237,392.58
  5. Step 5: Solve for x
    x = 13,126,237,392.58/130,345.22
  6. Step 6: Final answer
    x = 100,703.63

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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.