Home / 130,037.68-179,449.86-72,678.34

Finding the Fourth Proportional to 130,037.68, 179,449.86 and 72,678.34

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Solution

The fourth proportional to 130,037.68, 179,449.86 and 72,678.34 is: 100,294.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,037.68 : 179,449.86 = 72,678.34 : x
  2. Step 2: Convert to fraction form
    130,037.68/179,449.86 = 72,678.34/x
  3. Step 3: Cross multiply
    130,037.68x = 179,449.86 × 72,678.34
  4. Step 4: Simplify right side
    130,037.68x = 13,042,117,938.03
  5. Step 5: Solve for x
    x = 13,042,117,938.03/130,037.68
  6. Step 6: Final answer
    x = 100,294.91

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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.