Home / 138,565.32-191,220.04-74,903.12

Finding the Fourth Proportional to 138,565.32, 191,220.04 and 74,903.12

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Solution

The fourth proportional to 138,565.32, 191,220.04 and 74,903.12 is: 103,366.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,565.32 : 191,220.04 = 74,903.12 : x
  2. Step 2: Convert to fraction form
    138,565.32/191,220.04 = 74,903.12/x
  3. Step 3: Cross multiply
    138,565.32x = 191,220.04 × 74,903.12
  4. Step 4: Simplify right side
    138,565.32x = 14,322,977,602.52
  5. Step 5: Solve for x
    x = 14,322,977,602.52/138,565.32
  6. Step 6: Final answer
    x = 103,366.25

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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.