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Finding the Fourth Proportional to 130,471.50, 180,045.30 and 76,028.88

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Solution

The fourth proportional to 130,471.50, 180,045.30 and 76,028.88 is: 104,916.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,471.50 : 180,045.30 = 76,028.88 : x
  2. Step 2: Convert to fraction form
    130,471.50/180,045.30 = 76,028.88/x
  3. Step 3: Cross multiply
    130,471.50x = 180,045.30 × 76,028.88
  4. Step 4: Simplify right side
    130,471.50x = 13,688,642,508.26
  5. Step 5: Solve for x
    x = 13,688,642,508.26/130,471.50
  6. Step 6: Final answer
    x = 104,916.73

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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.