Home / 154,649,919.40-231,974,879.10-103,689,125.80

Finding the Fourth Proportional to 154,649,919.40, 231,974,879.10 and 103,689,125.80

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Solution

The fourth proportional to 154,649,919.40, 231,974,879.10 and 103,689,125.80 is: 155,533,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,649,919.40 : 231,974,879.10 = 103,689,125.80 : x
  2. Step 2: Convert to fraction form
    154,649,919.40/231,974,879.10 = 103,689,125.80/x
  3. Step 3: Cross multiply
    154,649,919.40x = 231,974,879.10 × 103,689,125.80
  4. Step 4: Simplify right side
    154,649,919.40x = 24,053,272,421,439,688
  5. Step 5: Solve for x
    x = 24,053,272,421,439,688/154,649,919.40
  6. Step 6: Final answer
    x = 155,533,688.70

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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.