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Finding the Fourth Proportional to 121,802.60, 182,703.90 and 84,404.90

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Solution

The fourth proportional to 121,802.60, 182,703.90 and 84,404.90 is: 126,607.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,802.60 : 182,703.90 = 84,404.90 : x
  2. Step 2: Convert to fraction form
    121,802.60/182,703.90 = 84,404.90/x
  3. Step 3: Cross multiply
    121,802.60x = 182,703.90 × 84,404.90
  4. Step 4: Simplify right side
    121,802.60x = 15,421,104,409.11
  5. Step 5: Solve for x
    x = 15,421,104,409.11/121,802.60
  6. Step 6: Final answer
    x = 126,607.35

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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.