Home / 142,168,748.40-213,253,122.60-120,645,387.90

Finding the Fourth Proportional to 142,168,748.40, 213,253,122.60 and 120,645,387.90

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Solution

The fourth proportional to 142,168,748.40, 213,253,122.60 and 120,645,387.90 is: 180,968,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,168,748.40 : 213,253,122.60 = 120,645,387.90 : x
  2. Step 2: Convert to fraction form
    142,168,748.40/213,253,122.60 = 120,645,387.90/x
  3. Step 3: Cross multiply
    142,168,748.40x = 213,253,122.60 × 120,645,387.90
  4. Step 4: Simplify right side
    142,168,748.40x = 25,728,005,696,963,256
  5. Step 5: Solve for x
    x = 25,728,005,696,963,256/142,168,748.40
  6. Step 6: Final answer
    x = 180,968,081.85

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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.