Home / 130,064.09-179,484.66-72,703.50

Finding the Fourth Proportional to 130,064.09, 179,484.66 and 72,703.50

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Solution

The fourth proportional to 130,064.09, 179,484.66 and 72,703.50 is: 100,328.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,064.09 : 179,484.66 = 72,703.50 : x
  2. Step 2: Convert to fraction form
    130,064.09/179,484.66 = 72,703.50/x
  3. Step 3: Cross multiply
    130,064.09x = 179,484.66 × 72,703.50
  4. Step 4: Simplify right side
    130,064.09x = 13,049,162,978.31
  5. Step 5: Solve for x
    x = 13,049,162,978.31/130,064.09
  6. Step 6: Final answer
    x = 100,328.72

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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.