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Finding the Fourth Proportional to 119,428.90, 164,807.76 and 65,708.89

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Solution

The fourth proportional to 119,428.90, 164,807.76 and 65,708.89 is: 90,676.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,428.90 : 164,807.76 = 65,708.89 : x
  2. Step 2: Convert to fraction form
    119,428.90/164,807.76 = 65,708.89/x
  3. Step 3: Cross multiply
    119,428.90x = 164,807.76 × 65,708.89
  4. Step 4: Simplify right side
    119,428.90x = 10,829,334,807.38
  5. Step 5: Solve for x
    x = 10,829,334,807.38/119,428.90
  6. Step 6: Final answer
    x = 90,676.00

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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.