Home / 138,628.68-191,307.58-74,966.46

Finding the Fourth Proportional to 138,628.68, 191,307.58 and 74,966.46

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Solution

The fourth proportional to 138,628.68, 191,307.58 and 74,966.46 is: 103,453.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,628.68 : 191,307.58 = 74,966.46 : x
  2. Step 2: Convert to fraction form
    138,628.68/191,307.58 = 74,966.46/x
  3. Step 3: Cross multiply
    138,628.68x = 191,307.58 × 74,966.46
  4. Step 4: Simplify right side
    138,628.68x = 14,341,652,043.77
  5. Step 5: Solve for x
    x = 14,341,652,043.77/138,628.68
  6. Step 6: Final answer
    x = 103,453.72

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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.