Home / 106,688.79-160,041.35-31,803.21

Finding the Fourth Proportional to 106,688.79, 160,041.35 and 31,803.21

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Solution

The fourth proportional to 106,688.79, 160,041.35 and 31,803.21 is: 47,707.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,688.79 : 160,041.35 = 31,803.21 : x
  2. Step 2: Convert to fraction form
    106,688.79/160,041.35 = 31,803.21/x
  3. Step 3: Cross multiply
    106,688.79x = 160,041.35 × 31,803.21
  4. Step 4: Simplify right side
    106,688.79x = 5,089,828,662.73
  5. Step 5: Solve for x
    x = 5,089,828,662.73/106,688.79
  6. Step 6: Final answer
    x = 47,707.25

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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.