Home / 139,521,742.40-209,282,613.60-42,476,679.20

Finding the Fourth Proportional to 139,521,742.40, 209,282,613.60 and 42,476,679.20

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Solution

The fourth proportional to 139,521,742.40, 209,282,613.60 and 42,476,679.20 is: 63,715,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,521,742.40 : 209,282,613.60 = 42,476,679.20 : x
  2. Step 2: Convert to fraction form
    139,521,742.40/209,282,613.60 = 42,476,679.20/x
  3. Step 3: Cross multiply
    139,521,742.40x = 209,282,613.60 × 42,476,679.20
  4. Step 4: Simplify right side
    139,521,742.40x = 8,889,630,440,024,757
  5. Step 5: Solve for x
    x = 8,889,630,440,024,757/139,521,742.40
  6. Step 6: Final answer
    x = 63,715,018.80

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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.