Home / 156,971.90-235,457.85-90,616.70

Finding the Fourth Proportional to 156,971.90, 235,457.85 and 90,616.70

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Solution

The fourth proportional to 156,971.90, 235,457.85 and 90,616.70 is: 135,925.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.90 : 235,457.85 = 90,616.70 : x
  2. Step 2: Convert to fraction form
    156,971.90/235,457.85 = 90,616.70/x
  3. Step 3: Cross multiply
    156,971.90x = 235,457.85 × 90,616.70
  4. Step 4: Simplify right side
    156,971.90x = 21,336,413,356.10
  5. Step 5: Solve for x
    x = 21,336,413,356.10/156,971.90
  6. Step 6: Final answer
    x = 135,925.05

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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.