Home / 99,501.31-149,271.66-28,424.56

Finding the Fourth Proportional to 99,501.31, 149,271.66 and 28,424.56

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Solution

The fourth proportional to 99,501.31, 149,271.66 and 28,424.56 is: 42,642.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,501.31 : 149,271.66 = 28,424.56 : x
  2. Step 2: Convert to fraction form
    99,501.31/149,271.66 = 28,424.56/x
  3. Step 3: Cross multiply
    99,501.31x = 149,271.66 × 28,424.56
  4. Step 4: Simplify right side
    99,501.31x = 4,242,981,702.42
  5. Step 5: Solve for x
    x = 4,242,981,702.42/99,501.31
  6. Step 6: Final answer
    x = 42,642.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.