Home / 138,501.15-191,131.50-74,838.93

Finding the Fourth Proportional to 138,501.15, 191,131.50 and 74,838.93

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Solution

The fourth proportional to 138,501.15, 191,131.50 and 74,838.93 is: 103,277.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,501.15 : 191,131.50 = 74,838.93 : x
  2. Step 2: Convert to fraction form
    138,501.15/191,131.50 = 74,838.93/x
  3. Step 3: Cross multiply
    138,501.15x = 191,131.50 × 74,838.93
  4. Step 4: Simplify right side
    138,501.15x = 14,304,076,949.30
  5. Step 5: Solve for x
    x = 14,304,076,949.30/138,501.15
  6. Step 6: Final answer
    x = 103,277.68

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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.