Home / 126,300,678.40-189,451,017.60-85,486,009.60

Finding the Fourth Proportional to 126,300,678.40, 189,451,017.60 and 85,486,009.60

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Solution

The fourth proportional to 126,300,678.40, 189,451,017.60 and 85,486,009.60 is: 128,229,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,300,678.40 : 189,451,017.60 = 85,486,009.60 : x
  2. Step 2: Convert to fraction form
    126,300,678.40/189,451,017.60 = 85,486,009.60/x
  3. Step 3: Cross multiply
    126,300,678.40x = 189,451,017.60 × 85,486,009.60
  4. Step 4: Simplify right side
    126,300,678.40x = 16,195,411,509,283,368
  5. Step 5: Solve for x
    x = 16,195,411,509,283,368/126,300,678.40
  6. Step 6: Final answer
    x = 128,229,014.40

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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.