Home / 84,245,417.20-126,368,125.80-68,939,916.40

Finding the Fourth Proportional to 84,245,417.20, 126,368,125.80 and 68,939,916.40

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Solution

The fourth proportional to 84,245,417.20, 126,368,125.80 and 68,939,916.40 is: 103,409,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,245,417.20 : 126,368,125.80 = 68,939,916.40 : x
  2. Step 2: Convert to fraction form
    84,245,417.20/126,368,125.80 = 68,939,916.40/x
  3. Step 3: Cross multiply
    84,245,417.20x = 126,368,125.80 × 68,939,916.40
  4. Step 4: Simplify right side
    84,245,417.20x = 8,711,808,028,276,684
  5. Step 5: Solve for x
    x = 8,711,808,028,276,684/84,245,417.20
  6. Step 6: Final answer
    x = 103,409,874.60

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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.