Home / 155,898.18-215,139.42-84,278.25

Finding the Fourth Proportional to 155,898.18, 215,139.42 and 84,278.25

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Solution

The fourth proportional to 155,898.18, 215,139.42 and 84,278.25 is: 116,303.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,898.18 : 215,139.42 = 84,278.25 : x
  2. Step 2: Convert to fraction form
    155,898.18/215,139.42 = 84,278.25/x
  3. Step 3: Cross multiply
    155,898.18x = 215,139.42 × 84,278.25
  4. Step 4: Simplify right side
    155,898.18x = 18,131,573,823.62
  5. Step 5: Solve for x
    x = 18,131,573,823.62/155,898.18
  6. Step 6: Final answer
    x = 116,303.95

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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.