Home / 209,420.30-289,006.50-118,779.95

Finding the Fourth Proportional to 209,420.30, 289,006.50 and 118,779.95

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Solution

The fourth proportional to 209,420.30, 289,006.50 and 118,779.95 is: 163,920.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,420.30 : 289,006.50 = 118,779.95 : x
  2. Step 2: Convert to fraction form
    209,420.30/289,006.50 = 118,779.95/x
  3. Step 3: Cross multiply
    209,420.30x = 289,006.50 × 118,779.95
  4. Step 4: Simplify right side
    209,420.30x = 34,328,176,174.64
  5. Step 5: Solve for x
    x = 34,328,176,174.64/209,420.30
  6. Step 6: Final answer
    x = 163,920.01

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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.