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Finding the Fourth Proportional to 116,877.80, 175,403.10 and 77,421.80

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Solution

The fourth proportional to 116,877.80, 175,403.10 and 77,421.80 is: 116,189.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,877.80 : 175,403.10 = 77,421.80 : x
  2. Step 2: Convert to fraction form
    116,877.80/175,403.10 = 77,421.80/x
  3. Step 3: Cross multiply
    116,877.80x = 175,403.10 × 77,421.80
  4. Step 4: Simplify right side
    116,877.80x = 13,580,023,727.58
  5. Step 5: Solve for x
    x = 13,580,023,727.58/116,877.80
  6. Step 6: Final answer
    x = 116,189.93

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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.