Home / 111,418,387.20-167,127,580.80-85,909,219.20

Finding the Fourth Proportional to 111,418,387.20, 167,127,580.80 and 85,909,219.20

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Solution

The fourth proportional to 111,418,387.20, 167,127,580.80 and 85,909,219.20 is: 128,863,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,418,387.20 : 167,127,580.80 = 85,909,219.20 : x
  2. Step 2: Convert to fraction form
    111,418,387.20/167,127,580.80 = 85,909,219.20/x
  3. Step 3: Cross multiply
    111,418,387.20x = 167,127,580.80 × 85,909,219.20
  4. Step 4: Simplify right side
    111,418,387.20x = 14,357,799,973,312,912
  5. Step 5: Solve for x
    x = 14,357,799,973,312,912/111,418,387.20
  6. Step 6: Final answer
    x = 128,863,828.80

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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.