Home / 87,117.40-130,541.70-64,826.20

Finding the Fourth Proportional to 87,117.40, 130,541.70 and 64,826.20

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Solution

The fourth proportional to 87,117.40, 130,541.70 and 64,826.20 is: 97,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,117.40 : 130,541.70 = 64,826.20 : x
  2. Step 2: Convert to fraction form
    87,117.40/130,541.70 = 64,826.20/x
  3. Step 3: Cross multiply
    87,117.40x = 130,541.70 × 64,826.20
  4. Step 4: Simplify right side
    87,117.40x = 8,462,522,352.54
  5. Step 5: Solve for x
    x = 8,462,522,352.54/87,117.40
  6. Step 6: Final answer
    x = 97,139.29

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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.