Home / 155,980.50-215,253.21-84,360.43

Finding the Fourth Proportional to 155,980.50, 215,253.21 and 84,360.43

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Solution

The fourth proportional to 155,980.50, 215,253.21 and 84,360.43 is: 116,417.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,980.50 : 215,253.21 = 84,360.43 : x
  2. Step 2: Convert to fraction form
    155,980.50/215,253.21 = 84,360.43/x
  3. Step 3: Cross multiply
    155,980.50x = 215,253.21 × 84,360.43
  4. Step 4: Simplify right side
    155,980.50x = 18,158,853,354.48
  5. Step 5: Solve for x
    x = 18,158,853,354.48/155,980.50
  6. Step 6: Final answer
    x = 116,417.46

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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.