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Finding the Fourth Proportional to 119,428.71, 164,807.51 and 65,708.70

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Solution

The fourth proportional to 119,428.71, 164,807.51 and 65,708.70 is: 90,675.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,428.71 : 164,807.51 = 65,708.70 : x
  2. Step 2: Convert to fraction form
    119,428.71/164,807.51 = 65,708.70/x
  3. Step 3: Cross multiply
    119,428.71x = 164,807.51 × 65,708.70
  4. Step 4: Simplify right side
    119,428.71x = 10,829,286,903.79
  5. Step 5: Solve for x
    x = 10,829,286,903.79/119,428.71
  6. Step 6: Final answer
    x = 90,675.74

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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.