Home / 115,021.42-158,725.66-64,710.70

Finding the Fourth Proportional to 115,021.42, 158,725.66 and 64,710.70

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Solution

The fourth proportional to 115,021.42, 158,725.66 and 64,710.70 is: 89,298.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,021.42 : 158,725.66 = 64,710.70 : x
  2. Step 2: Convert to fraction form
    115,021.42/158,725.66 = 64,710.70/x
  3. Step 3: Cross multiply
    115,021.42x = 158,725.66 × 64,710.70
  4. Step 4: Simplify right side
    115,021.42x = 10,271,248,566.56
  5. Step 5: Solve for x
    x = 10,271,248,566.56/115,021.42
  6. Step 6: Final answer
    x = 89,298.57

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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.