Home / 90,670.14-136,005.17-28,340.64

Finding the Fourth Proportional to 90,670.14, 136,005.17 and 28,340.64

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Solution

The fourth proportional to 90,670.14, 136,005.17 and 28,340.64 is: 42,510.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,670.14 : 136,005.17 = 28,340.64 : x
  2. Step 2: Convert to fraction form
    90,670.14/136,005.17 = 28,340.64/x
  3. Step 3: Cross multiply
    90,670.14x = 136,005.17 × 28,340.64
  4. Step 4: Simplify right side
    90,670.14x = 3,854,473,419.41
  5. Step 5: Solve for x
    x = 3,854,473,419.41/90,670.14
  6. Step 6: Final answer
    x = 42,510.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.