Home / 138,879,113.40-208,330,029.54-69,756,374.52

Finding the Fourth Proportional to 138,879,113.40, 208,330,029.54 and 69,756,374.52

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Solution

The fourth proportional to 138,879,113.40, 208,330,029.54 and 69,756,374.52 is: 104,640,267.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,879,113.40 : 208,330,029.54 = 69,756,374.52 : x
  2. Step 2: Convert to fraction form
    138,879,113.40/208,330,029.54 = 69,756,374.52/x
  3. Step 3: Cross multiply
    138,879,113.40x = 208,330,029.54 × 69,756,374.52
  4. Step 4: Simplify right side
    138,879,113.40x = 14,532,347,564,354,902
  5. Step 5: Solve for x
    x = 14,532,347,564,354,902/138,879,113.40
  6. Step 6: Final answer
    x = 104,640,267.41

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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.