Home / 158,000.04-218,043.93-86,385.38

Finding the Fourth Proportional to 158,000.04, 218,043.93 and 86,385.38

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Solution

The fourth proportional to 158,000.04, 218,043.93 and 86,385.38 is: 119,213.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,000.04 : 218,043.93 = 86,385.38 : x
  2. Step 2: Convert to fraction form
    158,000.04/218,043.93 = 86,385.38/x
  3. Step 3: Cross multiply
    158,000.04x = 218,043.93 × 86,385.38
  4. Step 4: Simplify right side
    158,000.04x = 18,835,806,659.52
  5. Step 5: Solve for x
    x = 18,835,806,659.52/158,000.04
  6. Step 6: Final answer
    x = 119,213.94

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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.