Home / 115,330.50-159,118.65-72,347.72

Finding the Fourth Proportional to 115,330.50, 159,118.65 and 72,347.72

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Solution

The fourth proportional to 115,330.50, 159,118.65 and 72,347.72 is: 99,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,330.50 : 159,118.65 = 72,347.72 : x
  2. Step 2: Convert to fraction form
    115,330.50/159,118.65 = 72,347.72/x
  3. Step 3: Cross multiply
    115,330.50x = 159,118.65 × 72,347.72
  4. Step 4: Simplify right side
    115,330.50x = 11,511,870,741.38
  5. Step 5: Solve for x
    x = 11,511,870,741.38/115,330.50
  6. Step 6: Final answer
    x = 99,816.36

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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.