Home / 130,339.31-179,826.45-72,970.20

Finding the Fourth Proportional to 130,339.31, 179,826.45 and 72,970.20

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Solution

The fourth proportional to 130,339.31, 179,826.45 and 72,970.20 is: 100,675.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,339.31 : 179,826.45 = 72,970.20 : x
  2. Step 2: Convert to fraction form
    130,339.31/179,826.45 = 72,970.20/x
  3. Step 3: Cross multiply
    130,339.31x = 179,826.45 × 72,970.20
  4. Step 4: Simplify right side
    130,339.31x = 13,121,971,207.37
  5. Step 5: Solve for x
    x = 13,121,971,207.37/130,339.31
  6. Step 6: Final answer
    x = 100,675.47

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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.