Home / 103,094.55-142,280.48-57,780.21

Finding the Fourth Proportional to 103,094.55, 142,280.48 and 57,780.21

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Solution

The fourth proportional to 103,094.55, 142,280.48 and 57,780.21 is: 79,742.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,094.55 : 142,280.48 = 57,780.21 : x
  2. Step 2: Convert to fraction form
    103,094.55/142,280.48 = 57,780.21/x
  3. Step 3: Cross multiply
    103,094.55x = 142,280.48 × 57,780.21
  4. Step 4: Simplify right side
    103,094.55x = 8,220,995,724.40
  5. Step 5: Solve for x
    x = 8,220,995,724.40/103,094.55
  6. Step 6: Final answer
    x = 79,742.29

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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.