Home / 127,186,687.20-190,780,030.80-118,683,631.20

Finding the Fourth Proportional to 127,186,687.20, 190,780,030.80 and 118,683,631.20

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Solution

The fourth proportional to 127,186,687.20, 190,780,030.80 and 118,683,631.20 is: 178,025,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,186,687.20 : 190,780,030.80 = 118,683,631.20 : x
  2. Step 2: Convert to fraction form
    127,186,687.20/190,780,030.80 = 118,683,631.20/x
  3. Step 3: Cross multiply
    127,186,687.20x = 190,780,030.80 × 118,683,631.20
  4. Step 4: Simplify right side
    127,186,687.20x = 22,642,466,815,791,844
  5. Step 5: Solve for x
    x = 22,642,466,815,791,844/127,186,687.20
  6. Step 6: Final answer
    x = 178,025,446.80

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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.