Home / 112,775.09-155,622.33-61,787.75

Finding the Fourth Proportional to 112,775.09, 155,622.33 and 61,787.75

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Solution

The fourth proportional to 112,775.09, 155,622.33 and 61,787.75 is: 85,263.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,775.09 : 155,622.33 = 61,787.75 : x
  2. Step 2: Convert to fraction form
    112,775.09/155,622.33 = 61,787.75/x
  3. Step 3: Cross multiply
    112,775.09x = 155,622.33 × 61,787.75
  4. Step 4: Simplify right side
    112,775.09x = 9,615,553,620.46
  5. Step 5: Solve for x
    x = 9,615,553,620.46/112,775.09
  6. Step 6: Final answer
    x = 85,263.10

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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.