Home / 128,715,347.20-193,073,020.80-118,133,766.40

Finding the Fourth Proportional to 128,715,347.20, 193,073,020.80 and 118,133,766.40

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Solution

The fourth proportional to 128,715,347.20, 193,073,020.80 and 118,133,766.40 is: 177,200,649.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,715,347.20 : 193,073,020.80 = 118,133,766.40 : x
  2. Step 2: Convert to fraction form
    128,715,347.20/193,073,020.80 = 118,133,766.40/x
  3. Step 3: Cross multiply
    128,715,347.20x = 193,073,020.80 × 118,133,766.40
  4. Step 4: Simplify right side
    128,715,347.20x = 22,808,443,137,329,544
  5. Step 5: Solve for x
    x = 22,808,443,137,329,544/128,715,347.20
  6. Step 6: Final answer
    x = 177,200,649.60

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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.