Home / 100,031,980.86-149,893,016.79-69,386,140.35

Finding the Fourth Proportional to 100,031,980.86, 149,893,016.79 and 69,386,140.35

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Solution

The fourth proportional to 100,031,980.86, 149,893,016.79 and 69,386,140.35 is: 103,971,727.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,031,980.86 : 149,893,016.79 = 69,386,140.35 : x
  2. Step 2: Convert to fraction form
    100,031,980.86/149,893,016.79 = 69,386,140.35/x
  3. Step 3: Cross multiply
    100,031,980.86x = 149,893,016.79 × 69,386,140.35
  4. Step 4: Simplify right side
    100,031,980.86x = 10,400,497,900,475,846
  5. Step 5: Solve for x
    x = 10,400,497,900,475,846/100,031,980.86
  6. Step 6: Final answer
    x = 103,971,727.95

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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.