Home / 162,122.90-243,208.80-77,867.21

Finding the Fourth Proportional to 162,122.90, 243,208.80 and 77,867.21

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Solution

The fourth proportional to 162,122.90, 243,208.80 and 77,867.21 is: 116,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,122.90 : 243,208.80 = 77,867.21 : x
  2. Step 2: Convert to fraction form
    162,122.90/243,208.80 = 77,867.21/x
  3. Step 3: Cross multiply
    162,122.90x = 243,208.80 × 77,867.21
  4. Step 4: Simplify right side
    162,122.90x = 18,937,989,487.40
  5. Step 5: Solve for x
    x = 18,937,989,487.40/162,122.90
  6. Step 6: Final answer
    x = 116,812.55

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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.