Home / 210,054.72-289,823.76-128,362.08

Finding the Fourth Proportional to 210,054.72, 289,823.76 and 128,362.08

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Solution

The fourth proportional to 210,054.72, 289,823.76 and 128,362.08 is: 177,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,054.72 : 289,823.76 = 128,362.08 : x
  2. Step 2: Convert to fraction form
    210,054.72/289,823.76 = 128,362.08/x
  3. Step 3: Cross multiply
    210,054.72x = 289,823.76 × 128,362.08
  4. Step 4: Simplify right side
    210,054.72x = 37,202,380,667.02
  5. Step 5: Solve for x
    x = 37,202,380,667.02/210,054.72
  6. Step 6: Final answer
    x = 177,108.04

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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.