Home / 91,043,856.90-136,565,785.35-80,521,325.10

Finding the Fourth Proportional to 91,043,856.90, 136,565,785.35 and 80,521,325.10

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Solution

The fourth proportional to 91,043,856.90, 136,565,785.35 and 80,521,325.10 is: 120,781,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,043,856.90 : 136,565,785.35 = 80,521,325.10 : x
  2. Step 2: Convert to fraction form
    91,043,856.90/136,565,785.35 = 80,521,325.10/x
  3. Step 3: Cross multiply
    91,043,856.90x = 136,565,785.35 × 80,521,325.10
  4. Step 4: Simplify right side
    91,043,856.90x = 10,996,457,999,704,166
  5. Step 5: Solve for x
    x = 10,996,457,999,704,166/91,043,856.90
  6. Step 6: Final answer
    x = 120,781,987.65

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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.