Home / 209,521.85-314,281.05-138,761.16

Finding the Fourth Proportional to 209,521.85, 314,281.05 and 138,761.16

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Solution

The fourth proportional to 209,521.85, 314,281.05 and 138,761.16 is: 208,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,521.85 : 314,281.05 = 138,761.16 : x
  2. Step 2: Convert to fraction form
    209,521.85/314,281.05 = 138,761.16/x
  3. Step 3: Cross multiply
    209,521.85x = 314,281.05 × 138,761.16
  4. Step 4: Simplify right side
    209,521.85x = 43,610,003,064.02
  5. Step 5: Solve for x
    x = 43,610,003,064.02/209,521.85
  6. Step 6: Final answer
    x = 208,140.60

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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.