Home / 128,633,405.60-192,908,642.88-42,351,269.24

Finding the Fourth Proportional to 128,633,405.60, 192,908,642.88 and 42,351,269.24

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Solution

The fourth proportional to 128,633,405.60, 192,908,642.88 and 42,351,269.24 is: 63,513,251.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,633,405.60 : 192,908,642.88 = 42,351,269.24 : x
  2. Step 2: Convert to fraction form
    128,633,405.60/192,908,642.88 = 42,351,269.24/x
  3. Step 3: Cross multiply
    128,633,405.60x = 192,908,642.88 × 42,351,269.24
  4. Step 4: Simplify right side
    128,633,405.60x = 8,169,925,873,333,889
  5. Step 5: Solve for x
    x = 8,169,925,873,333,889/128,633,405.60
  6. Step 6: Final answer
    x = 63,513,251.75

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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.