Home / 156,974.30-235,461.45-78,242.30

Finding the Fourth Proportional to 156,974.30, 235,461.45 and 78,242.30

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Solution

The fourth proportional to 156,974.30, 235,461.45 and 78,242.30 is: 117,363.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.30 : 235,461.45 = 78,242.30 : x
  2. Step 2: Convert to fraction form
    156,974.30/235,461.45 = 78,242.30/x
  3. Step 3: Cross multiply
    156,974.30x = 235,461.45 × 78,242.30
  4. Step 4: Simplify right side
    156,974.30x = 18,423,045,409.34
  5. Step 5: Solve for x
    x = 18,423,045,409.34/156,974.30
  6. Step 6: Final answer
    x = 117,363.45

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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.