Home / 155,347.04-214,386.18-86,436.89

Finding the Fourth Proportional to 155,347.04, 214,386.18 and 86,436.89

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Solution

The fourth proportional to 155,347.04, 214,386.18 and 86,436.89 is: 119,286.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,347.04 : 214,386.18 = 86,436.89 : x
  2. Step 2: Convert to fraction form
    155,347.04/214,386.18 = 86,436.89/x
  3. Step 3: Cross multiply
    155,347.04x = 214,386.18 × 86,436.89
  4. Step 4: Simplify right side
    155,347.04x = 18,530,873,586.25
  5. Step 5: Solve for x
    x = 18,530,873,586.25/155,347.04
  6. Step 6: Final answer
    x = 119,286.95

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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.