Home / 128,184.32-192,008.28-103,088.72

Finding the Fourth Proportional to 128,184.32, 192,008.28 and 103,088.72

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Solution

The fourth proportional to 128,184.32, 192,008.28 and 103,088.72 is: 154,417.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,184.32 : 192,008.28 = 103,088.72 : x
  2. Step 2: Convert to fraction form
    128,184.32/192,008.28 = 103,088.72/x
  3. Step 3: Cross multiply
    128,184.32x = 192,008.28 × 103,088.72
  4. Step 4: Simplify right side
    128,184.32x = 19,793,887,814.60
  5. Step 5: Solve for x
    x = 19,793,887,814.60/128,184.32
  6. Step 6: Final answer
    x = 154,417.39

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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.