Home / 138,566.99-191,222.57-74,904.80

Finding the Fourth Proportional to 138,566.99, 191,222.57 and 74,904.80

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Solution

The fourth proportional to 138,566.99, 191,222.57 and 74,904.80 is: 103,368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,566.99 : 191,222.57 = 74,904.80 : x
  2. Step 2: Convert to fraction form
    138,566.99/191,222.57 = 74,904.80/x
  3. Step 3: Cross multiply
    138,566.99x = 191,222.57 × 74,904.80
  4. Step 4: Simplify right side
    138,566.99x = 14,323,487,592.49
  5. Step 5: Solve for x
    x = 14,323,487,592.49/138,566.99
  6. Step 6: Final answer
    x = 103,368.68

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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.