Home / 130,677.12-180,267.96-85,381.62

Finding the Fourth Proportional to 130,677.12, 180,267.96 and 85,381.62

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Solution

The fourth proportional to 130,677.12, 180,267.96 and 85,381.62 is: 117,783.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,677.12 : 180,267.96 = 85,381.62 : x
  2. Step 2: Convert to fraction form
    130,677.12/180,267.96 = 85,381.62/x
  3. Step 3: Cross multiply
    130,677.12x = 180,267.96 × 85,381.62
  4. Step 4: Simplify right side
    130,677.12x = 15,391,569,889.67
  5. Step 5: Solve for x
    x = 15,391,569,889.67/130,677.12
  6. Step 6: Final answer
    x = 117,783.20

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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.