Home / 158,205.75-218,312.96-90,225.58

Finding the Fourth Proportional to 158,205.75, 218,312.96 and 90,225.58

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Solution

The fourth proportional to 158,205.75, 218,312.96 and 90,225.58 is: 124,505.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,205.75 : 218,312.96 = 90,225.58 : x
  2. Step 2: Convert to fraction form
    158,205.75/218,312.96 = 90,225.58/x
  3. Step 3: Cross multiply
    158,205.75x = 218,312.96 × 90,225.58
  4. Step 4: Simplify right side
    158,205.75x = 19,697,413,437.52
  5. Step 5: Solve for x
    x = 19,697,413,437.52/158,205.75
  6. Step 6: Final answer
    x = 124,505.05

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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.