Home / 112,638.60-155,458.80-64,240.62

Finding the Fourth Proportional to 112,638.60, 155,458.80 and 64,240.62

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Solution

The fourth proportional to 112,638.60, 155,458.80 and 64,240.62 is: 88,662.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,638.60 : 155,458.80 = 64,240.62 : x
  2. Step 2: Convert to fraction form
    112,638.60/155,458.80 = 64,240.62/x
  3. Step 3: Cross multiply
    112,638.60x = 155,458.80 × 64,240.62
  4. Step 4: Simplify right side
    112,638.60x = 9,986,769,696.46
  5. Step 5: Solve for x
    x = 9,986,769,696.46/112,638.60
  6. Step 6: Final answer
    x = 88,662.05

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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.