Home / 102,038.28-140,812.20-56,715.54

Finding the Fourth Proportional to 102,038.28, 140,812.20 and 56,715.54

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Solution

The fourth proportional to 102,038.28, 140,812.20 and 56,715.54 is: 78,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,038.28 : 140,812.20 = 56,715.54 : x
  2. Step 2: Convert to fraction form
    102,038.28/140,812.20 = 56,715.54/x
  3. Step 3: Cross multiply
    102,038.28x = 140,812.20 × 56,715.54
  4. Step 4: Simplify right side
    102,038.28x = 7,986,239,961.59
  5. Step 5: Solve for x
    x = 7,986,239,961.59/102,038.28
  6. Step 6: Final answer
    x = 78,267.10

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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.