Home / 125,455.55-173,126.90-77,720.63

Finding the Fourth Proportional to 125,455.55, 173,126.90 and 77,720.63

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Solution

The fourth proportional to 125,455.55, 173,126.90 and 77,720.63 is: 107,253.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,455.55 : 173,126.90 = 77,720.63 : x
  2. Step 2: Convert to fraction form
    125,455.55/173,126.90 = 77,720.63/x
  3. Step 3: Cross multiply
    125,455.55x = 173,126.90 × 77,720.63
  4. Step 4: Simplify right side
    125,455.55x = 13,455,531,066.61
  5. Step 5: Solve for x
    x = 13,455,531,066.61/125,455.55
  6. Step 6: Final answer
    x = 107,253.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.