Home / 138,444.42-191,053.37-74,782.20

Finding the Fourth Proportional to 138,444.42, 191,053.37 and 74,782.20

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Solution

The fourth proportional to 138,444.42, 191,053.37 and 74,782.20 is: 103,199.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,444.42 : 191,053.37 = 74,782.20 : x
  2. Step 2: Convert to fraction form
    138,444.42/191,053.37 = 74,782.20/x
  3. Step 3: Cross multiply
    138,444.42x = 191,053.37 × 74,782.20
  4. Step 4: Simplify right side
    138,444.42x = 14,287,390,952.10
  5. Step 5: Solve for x
    x = 14,287,390,952.10/138,444.42
  6. Step 6: Final answer
    x = 103,199.47

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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.