Home / 156,875.40-235,215.90-90,282.60

Finding the Fourth Proportional to 156,875.40, 235,215.90 and 90,282.60

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Solution

The fourth proportional to 156,875.40, 235,215.90 and 90,282.60 is: 135,367.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,875.40 : 235,215.90 = 90,282.60 : x
  2. Step 2: Convert to fraction form
    156,875.40/235,215.90 = 90,282.60/x
  3. Step 3: Cross multiply
    156,875.40x = 235,215.90 × 90,282.60
  4. Step 4: Simplify right side
    156,875.40x = 21,235,903,013.34
  5. Step 5: Solve for x
    x = 21,235,903,013.34/156,875.40
  6. Step 6: Final answer
    x = 135,367.96

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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.