Home / 158,405.50-218,545.77-90,373.60

Finding the Fourth Proportional to 158,405.50, 218,545.77 and 90,373.60

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Solution

The fourth proportional to 158,405.50, 218,545.77 and 90,373.60 is: 124,684.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,405.50 : 218,545.77 = 90,373.60 : x
  2. Step 2: Convert to fraction form
    158,405.50/218,545.77 = 90,373.60/x
  3. Step 3: Cross multiply
    158,405.50x = 218,545.77 × 90,373.60
  4. Step 4: Simplify right side
    158,405.50x = 19,750,767,999.67
  5. Step 5: Solve for x
    x = 19,750,767,999.67/158,405.50
  6. Step 6: Final answer
    x = 124,684.86

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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.