Home / 90,206.53-124,402.74-77,455.72

Finding the Fourth Proportional to 90,206.53, 124,402.74 and 77,455.72

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Solution

The fourth proportional to 90,206.53, 124,402.74 and 77,455.72 is: 106,818.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,206.53 : 124,402.74 = 77,455.72 : x
  2. Step 2: Convert to fraction form
    90,206.53/124,402.74 = 77,455.72/x
  3. Step 3: Cross multiply
    90,206.53x = 124,402.74 × 77,455.72
  4. Step 4: Simplify right side
    90,206.53x = 9,635,703,796.67
  5. Step 5: Solve for x
    x = 9,635,703,796.67/90,206.53
  6. Step 6: Final answer
    x = 106,818.25

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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.