Home / 113,683.70-156,895.20-72,319.38

Finding the Fourth Proportional to 113,683.70, 156,895.20 and 72,319.38

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Solution

The fourth proportional to 113,683.70, 156,895.20 and 72,319.38 is: 99,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,683.70 : 156,895.20 = 72,319.38 : x
  2. Step 2: Convert to fraction form
    113,683.70/156,895.20 = 72,319.38/x
  3. Step 3: Cross multiply
    113,683.70x = 156,895.20 × 72,319.38
  4. Step 4: Simplify right side
    113,683.70x = 11,346,563,588.98
  5. Step 5: Solve for x
    x = 11,346,563,588.98/113,683.70
  6. Step 6: Final answer
    x = 99,808.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.