Home / 156,989.10-235,483.65-90,558.98

Finding the Fourth Proportional to 156,989.10, 235,483.65 and 90,558.98

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Solution

The fourth proportional to 156,989.10, 235,483.65 and 90,558.98 is: 135,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,989.10 : 235,483.65 = 90,558.98 : x
  2. Step 2: Convert to fraction form
    156,989.10/235,483.65 = 90,558.98/x
  3. Step 3: Cross multiply
    156,989.10x = 235,483.65 × 90,558.98
  4. Step 4: Simplify right side
    156,989.10x = 21,325,157,973.26
  5. Step 5: Solve for x
    x = 21,325,157,973.26/156,989.10
  6. Step 6: Final answer
    x = 135,838.46

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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.