Home / 138,973.64-191,783.14-75,313

Finding the Fourth Proportional to 138,973.64, 191,783.14 and 75,313

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Solution

The fourth proportional to 138,973.64, 191,783.14 and 75,313 is: 103,931.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,973.64 : 191,783.14 = 75,313 : x
  2. Step 2: Convert to fraction form
    138,973.64/191,783.14 = 75,313/x
  3. Step 3: Cross multiply
    138,973.64x = 191,783.14 × 75,313
  4. Step 4: Simplify right side
    138,973.64x = 14,443,763,622.82
  5. Step 5: Solve for x
    x = 14,443,763,622.82/138,973.64
  6. Step 6: Final answer
    x = 103,931.68

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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.