Home / 129,030,493.60-193,545,740.40-72,289,424.80

Finding the Fourth Proportional to 129,030,493.60, 193,545,740.40 and 72,289,424.80

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Solution

The fourth proportional to 129,030,493.60, 193,545,740.40 and 72,289,424.80 is: 108,434,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,030,493.60 : 193,545,740.40 = 72,289,424.80 : x
  2. Step 2: Convert to fraction form
    129,030,493.60/193,545,740.40 = 72,289,424.80/x
  3. Step 3: Cross multiply
    129,030,493.60x = 193,545,740.40 × 72,289,424.80
  4. Step 4: Simplify right side
    129,030,493.60x = 13,991,310,246,006,122
  5. Step 5: Solve for x
    x = 13,991,310,246,006,122/129,030,493.60
  6. Step 6: Final answer
    x = 108,434,137.20

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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.