Home / 129,037,807.80-193,556,711.70-128,142,012.60

Finding the Fourth Proportional to 129,037,807.80, 193,556,711.70 and 128,142,012.60

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Solution

The fourth proportional to 129,037,807.80, 193,556,711.70 and 128,142,012.60 is: 192,213,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,037,807.80 : 193,556,711.70 = 128,142,012.60 : x
  2. Step 2: Convert to fraction form
    129,037,807.80/193,556,711.70 = 128,142,012.60/x
  3. Step 3: Cross multiply
    129,037,807.80x = 193,556,711.70 × 128,142,012.60
  4. Step 4: Simplify right side
    129,037,807.80x = 24,802,746,589,475,964
  5. Step 5: Solve for x
    x = 24,802,746,589,475,964/129,037,807.80
  6. Step 6: Final answer
    x = 192,213,018.90

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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.