Home / 104,030.10-156,045.15-86,519.70

Finding the Fourth Proportional to 104,030.10, 156,045.15 and 86,519.70

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Solution

The fourth proportional to 104,030.10, 156,045.15 and 86,519.70 is: 129,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,030.10 : 156,045.15 = 86,519.70 : x
  2. Step 2: Convert to fraction form
    104,030.10/156,045.15 = 86,519.70/x
  3. Step 3: Cross multiply
    104,030.10x = 156,045.15 × 86,519.70
  4. Step 4: Simplify right side
    104,030.10x = 13,500,979,564.46
  5. Step 5: Solve for x
    x = 13,500,979,564.46/104,030.10
  6. Step 6: Final answer
    x = 129,779.55

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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.