Home / 112,128.81-154,733.74-61,140.72

Finding the Fourth Proportional to 112,128.81, 154,733.74 and 61,140.72

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Solution

The fourth proportional to 112,128.81, 154,733.74 and 61,140.72 is: 84,372.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,128.81 : 154,733.74 = 61,140.72 : x
  2. Step 2: Convert to fraction form
    112,128.81/154,733.74 = 61,140.72/x
  3. Step 3: Cross multiply
    112,128.81x = 154,733.74 × 61,140.72
  4. Step 4: Simplify right side
    112,128.81x = 9,460,533,043.21
  5. Step 5: Solve for x
    x = 9,460,533,043.21/112,128.81
  6. Step 6: Final answer
    x = 84,372.01

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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.