Home / 126,240,009.60-189,360,014.40-72,492,297.60

Finding the Fourth Proportional to 126,240,009.60, 189,360,014.40 and 72,492,297.60

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Solution

The fourth proportional to 126,240,009.60, 189,360,014.40 and 72,492,297.60 is: 108,738,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,240,009.60 : 189,360,014.40 = 72,492,297.60 : x
  2. Step 2: Convert to fraction form
    126,240,009.60/189,360,014.40 = 72,492,297.60/x
  3. Step 3: Cross multiply
    126,240,009.60x = 189,360,014.40 × 72,492,297.60
  4. Step 4: Simplify right side
    126,240,009.60x = 13,727,142,517,425,084
  5. Step 5: Solve for x
    x = 13,727,142,517,425,084/126,240,009.60
  6. Step 6: Final answer
    x = 108,738,446.40

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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.