Home / 103,220.46-142,460.19-57,916.76

Finding the Fourth Proportional to 103,220.46, 142,460.19 and 57,916.76

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Solution

The fourth proportional to 103,220.46, 142,460.19 and 57,916.76 is: 79,934.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,220.46 : 142,460.19 = 57,916.76 : x
  2. Step 2: Convert to fraction form
    103,220.46/142,460.19 = 57,916.76/x
  3. Step 3: Cross multiply
    103,220.46x = 142,460.19 × 57,916.76
  4. Step 4: Simplify right side
    103,220.46x = 8,250,831,921.48
  5. Step 5: Solve for x
    x = 8,250,831,921.48/103,220.46
  6. Step 6: Final answer
    x = 79,934.07

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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.