Home / 139,439.84-209,157.33-45,946.40

Finding the Fourth Proportional to 139,439.84, 209,157.33 and 45,946.40

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Solution

The fourth proportional to 139,439.84, 209,157.33 and 45,946.40 is: 68,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,439.84 : 209,157.33 = 45,946.40 : x
  2. Step 2: Convert to fraction form
    139,439.84/209,157.33 = 45,946.40/x
  3. Step 3: Cross multiply
    139,439.84x = 209,157.33 × 45,946.40
  4. Step 4: Simplify right side
    139,439.84x = 9,610,026,347.11
  5. Step 5: Solve for x
    x = 9,610,026,347.11/139,439.84
  6. Step 6: Final answer
    x = 68,918.80

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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.