Home / 125,139.92-172,692.67-67,779.10

Finding the Fourth Proportional to 125,139.92, 172,692.67 and 67,779.10

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Solution

The fourth proportional to 125,139.92, 172,692.67 and 67,779.10 is: 93,534.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,139.92 : 172,692.67 = 67,779.10 : x
  2. Step 2: Convert to fraction form
    125,139.92/172,692.67 = 67,779.10/x
  3. Step 3: Cross multiply
    125,139.92x = 172,692.67 × 67,779.10
  4. Step 4: Simplify right side
    125,139.92x = 11,704,953,410.89
  5. Step 5: Solve for x
    x = 11,704,953,410.89/125,139.92
  6. Step 6: Final answer
    x = 93,534.93

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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.