Home / 130,575.31-179,020.40-128,213.35

Finding the Fourth Proportional to 130,575.31, 179,020.40 and 128,213.35

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Solution

The fourth proportional to 130,575.31, 179,020.40 and 128,213.35 is: 175,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,575.31 : 179,020.40 = 128,213.35 : x
  2. Step 2: Convert to fraction form
    130,575.31/179,020.40 = 128,213.35/x
  3. Step 3: Cross multiply
    130,575.31x = 179,020.40 × 128,213.35
  4. Step 4: Simplify right side
    130,575.31x = 22,952,805,202.34
  5. Step 5: Solve for x
    x = 22,952,805,202.34/130,575.31
  6. Step 6: Final answer
    x = 175,782.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.