Home / 112,116.76-154,720.50-61,815.80

Finding the Fourth Proportional to 112,116.76, 154,720.50 and 61,815.80

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Solution

The fourth proportional to 112,116.76, 154,720.50 and 61,815.80 is: 85,305.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,116.76 : 154,720.50 = 61,815.80 : x
  2. Step 2: Convert to fraction form
    112,116.76/154,720.50 = 61,815.80/x
  3. Step 3: Cross multiply
    112,116.76x = 154,720.50 × 61,815.80
  4. Step 4: Simplify right side
    112,116.76x = 9,564,171,483.90
  5. Step 5: Solve for x
    x = 9,564,171,483.90/112,116.76
  6. Step 6: Final answer
    x = 85,305.46

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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.