Home / 112,734.60-155,569.62-64,989.96

Finding the Fourth Proportional to 112,734.60, 155,569.62 and 64,989.96

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Solution

The fourth proportional to 112,734.60, 155,569.62 and 64,989.96 is: 89,683.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,734.60 : 155,569.62 = 64,989.96 : x
  2. Step 2: Convert to fraction form
    112,734.60/155,569.62 = 64,989.96/x
  3. Step 3: Cross multiply
    112,734.60x = 155,569.62 × 64,989.96
  4. Step 4: Simplify right side
    112,734.60x = 10,110,463,381.02
  5. Step 5: Solve for x
    x = 10,110,463,381.02/112,734.60
  6. Step 6: Final answer
    x = 89,683.77

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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.