Home / 249,779.70-374,669.55-81,315.90

Finding the Fourth Proportional to 249,779.70, 374,669.55 and 81,315.90

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Solution

The fourth proportional to 249,779.70, 374,669.55 and 81,315.90 is: 121,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,779.70 : 374,669.55 = 81,315.90 : x
  2. Step 2: Convert to fraction form
    249,779.70/374,669.55 = 81,315.90/x
  3. Step 3: Cross multiply
    249,779.70x = 374,669.55 × 81,315.90
  4. Step 4: Simplify right side
    249,779.70x = 30,466,591,660.85
  5. Step 5: Solve for x
    x = 30,466,591,660.85/249,779.70
  6. Step 6: Final answer
    x = 121,973.85

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1.5x scale

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.