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Finding the Fourth Proportional to 140,501.76, 210,787.20 and 99,029.76

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Solution

The fourth proportional to 140,501.76, 210,787.20 and 99,029.76 is: 148,569.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,501.76 : 210,787.20 = 99,029.76 : x
  2. Step 2: Convert to fraction form
    140,501.76/210,787.20 = 99,029.76/x
  3. Step 3: Cross multiply
    140,501.76x = 210,787.20 × 99,029.76
  4. Step 4: Simplify right side
    140,501.76x = 20,874,205,827.07
  5. Step 5: Solve for x
    x = 20,874,205,827.07/140,501.76
  6. Step 6: Final answer
    x = 148,569.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.