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Finding the Fourth Proportional to 119,137.79, 164,411.29 and 65,423.93

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Solution

The fourth proportional to 119,137.79, 164,411.29 and 65,423.93 is: 90,285.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,137.79 : 164,411.29 = 65,423.93 : x
  2. Step 2: Convert to fraction form
    119,137.79/164,411.29 = 65,423.93/x
  3. Step 3: Cross multiply
    119,137.79x = 164,411.29 × 65,423.93
  4. Step 4: Simplify right side
    119,137.79x = 10,756,432,728.17
  5. Step 5: Solve for x
    x = 10,756,432,728.17/119,137.79
  6. Step 6: Final answer
    x = 90,285.65

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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.