Home / 125,213,153.60-187,819,730.40-76,840,212.80

Finding the Fourth Proportional to 125,213,153.60, 187,819,730.40 and 76,840,212.80

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Solution

The fourth proportional to 125,213,153.60, 187,819,730.40 and 76,840,212.80 is: 115,260,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,213,153.60 : 187,819,730.40 = 76,840,212.80 : x
  2. Step 2: Convert to fraction form
    125,213,153.60/187,819,730.40 = 76,840,212.80/x
  3. Step 3: Cross multiply
    125,213,153.60x = 187,819,730.40 × 76,840,212.80
  4. Step 4: Simplify right side
    125,213,153.60x = 14,432,108,051,974,630
  5. Step 5: Solve for x
    x = 14,432,108,051,974,630/125,213,153.60
  6. Step 6: Final answer
    x = 115,260,319.20

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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.