Home / 156,685.40-235,181.70-77,888.60

Finding the Fourth Proportional to 156,685.40, 235,181.70 and 77,888.60

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Solution

The fourth proportional to 156,685.40, 235,181.70 and 77,888.60 is: 116,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,685.40 : 235,181.70 = 77,888.60 : x
  2. Step 2: Convert to fraction form
    156,685.40/235,181.70 = 77,888.60/x
  3. Step 3: Cross multiply
    156,685.40x = 235,181.70 × 77,888.60
  4. Step 4: Simplify right side
    156,685.40x = 18,317,973,358.62
  5. Step 5: Solve for x
    x = 18,317,973,358.62/156,685.40
  6. Step 6: Final answer
    x = 116,909.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.