Home / 80,885,870.10-121,328,805.15-76,740,630.30

Finding the Fourth Proportional to 80,885,870.10, 121,328,805.15 and 76,740,630.30

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Solution

The fourth proportional to 80,885,870.10, 121,328,805.15 and 76,740,630.30 is: 115,110,945.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885,870.10 : 121,328,805.15 = 76,740,630.30 : x
  2. Step 2: Convert to fraction form
    80,885,870.10/121,328,805.15 = 76,740,630.30/x
  3. Step 3: Cross multiply
    80,885,870.10x = 121,328,805.15 × 76,740,630.30
  4. Step 4: Simplify right side
    80,885,870.10x = 9,310,848,980,756,886
  5. Step 5: Solve for x
    x = 9,310,848,980,756,886/80,885,870.10
  6. Step 6: Final answer
    x = 115,110,945.45

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1.5x scale

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.