Home / 112,687.36-155,503.76-61,699.16

Finding the Fourth Proportional to 112,687.36, 155,503.76 and 61,699.16

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Solution

The fourth proportional to 112,687.36, 155,503.76 and 61,699.16 is: 85,142.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,687.36 : 155,503.76 = 61,699.16 : x
  2. Step 2: Convert to fraction form
    112,687.36/155,503.76 = 61,699.16/x
  3. Step 3: Cross multiply
    112,687.36x = 155,503.76 × 61,699.16
  4. Step 4: Simplify right side
    112,687.36x = 9,594,451,449.11
  5. Step 5: Solve for x
    x = 9,594,451,449.11/112,687.36
  6. Step 6: Final answer
    x = 85,142.22

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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.