Home / 155,904.95-215,155.10-87,000.44

Finding the Fourth Proportional to 155,904.95, 215,155.10 and 87,000.44

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Solution

The fourth proportional to 155,904.95, 215,155.10 and 87,000.44 is: 120,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,904.95 : 215,155.10 = 87,000.44 : x
  2. Step 2: Convert to fraction form
    155,904.95/215,155.10 = 87,000.44/x
  3. Step 3: Cross multiply
    155,904.95x = 215,155.10 × 87,000.44
  4. Step 4: Simplify right side
    155,904.95x = 18,718,587,933.24
  5. Step 5: Solve for x
    x = 18,718,587,933.24/155,904.95
  6. Step 6: Final answer
    x = 120,064.10

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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.