Home / 112,427.16-155,148.12-61,439.64

Finding the Fourth Proportional to 112,427.16, 155,148.12 and 61,439.64

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Solution

The fourth proportional to 112,427.16, 155,148.12 and 61,439.64 is: 84,785.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,427.16 : 155,148.12 = 61,439.64 : x
  2. Step 2: Convert to fraction form
    112,427.16/155,148.12 = 61,439.64/x
  3. Step 3: Cross multiply
    112,427.16x = 155,148.12 × 61,439.64
  4. Step 4: Simplify right side
    112,427.16x = 9,532,244,639.48
  5. Step 5: Solve for x
    x = 9,532,244,639.48/112,427.16
  6. Step 6: Final answer
    x = 84,785.96

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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.