Home / 130,187.75-179,650.59-72,817.13

Finding the Fourth Proportional to 130,187.75, 179,650.59 and 72,817.13

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Solution

The fourth proportional to 130,187.75, 179,650.59 and 72,817.13 is: 100,482.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,187.75 : 179,650.59 = 72,817.13 : x
  2. Step 2: Convert to fraction form
    130,187.75/179,650.59 = 72,817.13/x
  3. Step 3: Cross multiply
    130,187.75x = 179,650.59 × 72,817.13
  4. Step 4: Simplify right side
    130,187.75x = 13,081,639,468.35
  5. Step 5: Solve for x
    x = 13,081,639,468.35/130,187.75
  6. Step 6: Final answer
    x = 100,482.88

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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.