Home / 138,500.15-191,130.12-74,837.93

Finding the Fourth Proportional to 138,500.15, 191,130.12 and 74,837.93

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Solution

The fourth proportional to 138,500.15, 191,130.12 and 74,837.93 is: 103,276.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,500.15 : 191,130.12 = 74,837.93 : x
  2. Step 2: Convert to fraction form
    138,500.15/191,130.12 = 74,837.93/x
  3. Step 3: Cross multiply
    138,500.15x = 191,130.12 × 74,837.93
  4. Step 4: Simplify right side
    138,500.15x = 14,303,781,585.80
  5. Step 5: Solve for x
    x = 14,303,781,585.80/138,500.15
  6. Step 6: Final answer
    x = 103,276.29

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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.