Home / 126,029,128.80-189,043,693.20-118,376,378.40

Finding the Fourth Proportional to 126,029,128.80, 189,043,693.20 and 118,376,378.40

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Solution

The fourth proportional to 126,029,128.80, 189,043,693.20 and 118,376,378.40 is: 177,564,567.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,029,128.80 : 189,043,693.20 = 118,376,378.40 : x
  2. Step 2: Convert to fraction form
    126,029,128.80/189,043,693.20 = 118,376,378.40/x
  3. Step 3: Cross multiply
    126,029,128.80x = 189,043,693.20 × 118,376,378.40
  4. Step 4: Simplify right side
    126,029,128.80x = 22,378,307,760,376,708
  5. Step 5: Solve for x
    x = 22,378,307,760,376,708/126,029,128.80
  6. Step 6: Final answer
    x = 177,564,567.60

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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.