Home / 112,902.06-155,804.66-65,155.40

Finding the Fourth Proportional to 112,902.06, 155,804.66 and 65,155.40

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Solution

The fourth proportional to 112,902.06, 155,804.66 and 65,155.40 is: 89,914.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,902.06 : 155,804.66 = 65,155.40 : x
  2. Step 2: Convert to fraction form
    112,902.06/155,804.66 = 65,155.40/x
  3. Step 3: Cross multiply
    112,902.06x = 155,804.66 × 65,155.40
  4. Step 4: Simplify right side
    112,902.06x = 10,151,514,944.16
  5. Step 5: Solve for x
    x = 10,151,514,944.16/112,902.06
  6. Step 6: Final answer
    x = 89,914.35

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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.