Home / 125,498.74-188,248.18-78,784.42

Finding the Fourth Proportional to 125,498.74, 188,248.18 and 78,784.42

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Solution

The fourth proportional to 125,498.74, 188,248.18 and 78,784.42 is: 118,176.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,498.74 : 188,248.18 = 78,784.42 : x
  2. Step 2: Convert to fraction form
    125,498.74/188,248.18 = 78,784.42/x
  3. Step 3: Cross multiply
    125,498.74x = 188,248.18 × 78,784.42
  4. Step 4: Simplify right side
    125,498.74x = 14,831,023,362.74
  5. Step 5: Solve for x
    x = 14,831,023,362.74/125,498.74
  6. Step 6: Final answer
    x = 118,176.67

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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.