Home / 112,838.57-155,715.01-61,851.40

Finding the Fourth Proportional to 112,838.57, 155,715.01 and 61,851.40

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Solution

The fourth proportional to 112,838.57, 155,715.01 and 61,851.40 is: 85,353.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,838.57 : 155,715.01 = 61,851.40 : x
  2. Step 2: Convert to fraction form
    112,838.57/155,715.01 = 61,851.40/x
  3. Step 3: Cross multiply
    112,838.57x = 155,715.01 × 61,851.40
  4. Step 4: Simplify right side
    112,838.57x = 9,631,190,825.60
  5. Step 5: Solve for x
    x = 9,631,190,825.60/112,838.57
  6. Step 6: Final answer
    x = 85,353.71

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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.