Home / 112,968.70-155,895.80-61,980.46

Finding the Fourth Proportional to 112,968.70, 155,895.80 and 61,980.46

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Solution

The fourth proportional to 112,968.70, 155,895.80 and 61,980.46 is: 85,532.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,968.70 : 155,895.80 = 61,980.46 : x
  2. Step 2: Convert to fraction form
    112,968.70/155,895.80 = 61,980.46/x
  3. Step 3: Cross multiply
    112,968.70x = 155,895.80 × 61,980.46
  4. Step 4: Simplify right side
    112,968.70x = 9,662,492,696.43
  5. Step 5: Solve for x
    x = 9,662,492,696.43/112,968.70
  6. Step 6: Final answer
    x = 85,532.48

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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.