Home / 80,892,001.40-121,338,002.10-77,112,865.40

Finding the Fourth Proportional to 80,892,001.40, 121,338,002.10 and 77,112,865.40

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Solution

The fourth proportional to 80,892,001.40, 121,338,002.10 and 77,112,865.40 is: 115,669,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,892,001.40 : 121,338,002.10 = 77,112,865.40 : x
  2. Step 2: Convert to fraction form
    80,892,001.40/121,338,002.10 = 77,112,865.40/x
  3. Step 3: Cross multiply
    80,892,001.40x = 121,338,002.10 × 77,112,865.40
  4. Step 4: Simplify right side
    80,892,001.40x = 9,356,721,023,842,218
  5. Step 5: Solve for x
    x = 9,356,721,023,842,218/80,892,001.40
  6. Step 6: Final answer
    x = 115,669,298.10

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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.