Home / 155,779.76-214,986.18-90,381.98

Finding the Fourth Proportional to 155,779.76, 214,986.18 and 90,381.98

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Solution

The fourth proportional to 155,779.76, 214,986.18 and 90,381.98 is: 124,733.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,779.76 : 214,986.18 = 90,381.98 : x
  2. Step 2: Convert to fraction form
    155,779.76/214,986.18 = 90,381.98/x
  3. Step 3: Cross multiply
    155,779.76x = 214,986.18 × 90,381.98
  4. Step 4: Simplify right side
    155,779.76x = 19,430,876,621.04
  5. Step 5: Solve for x
    x = 19,430,876,621.04/155,779.76
  6. Step 6: Final answer
    x = 124,733.00

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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.