Home / 155,880.18-215,114.56-84,260.21

Finding the Fourth Proportional to 155,880.18, 215,114.56 and 84,260.21

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Solution

The fourth proportional to 155,880.18, 215,114.56 and 84,260.21 is: 116,279.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,880.18 : 215,114.56 = 84,260.21 : x
  2. Step 2: Convert to fraction form
    155,880.18/215,114.56 = 84,260.21/x
  3. Step 3: Cross multiply
    155,880.18x = 215,114.56 × 84,260.21
  4. Step 4: Simplify right side
    155,880.18x = 18,125,596,950.42
  5. Step 5: Solve for x
    x = 18,125,596,950.42/155,880.18
  6. Step 6: Final answer
    x = 116,279.03

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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.