Home / 103,562.79-142,915.28-58,240.76

Finding the Fourth Proportional to 103,562.79, 142,915.28 and 58,240.76

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Solution

The fourth proportional to 103,562.79, 142,915.28 and 58,240.76 is: 80,371.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,562.79 : 142,915.28 = 58,240.76 : x
  2. Step 2: Convert to fraction form
    103,562.79/142,915.28 = 58,240.76/x
  3. Step 3: Cross multiply
    103,562.79x = 142,915.28 × 58,240.76
  4. Step 4: Simplify right side
    103,562.79x = 8,323,494,522.81
  5. Step 5: Solve for x
    x = 8,323,494,522.81/103,562.79
  6. Step 6: Final answer
    x = 80,371.48

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Double scale
Find fourth proportional to 103,563.79, 142,916.66 and 58,241.76
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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.