Home / 78,156.98-117,112.53-60,430.94

Finding the Fourth Proportional to 78,156.98, 117,112.53 and 60,430.94

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Solution

The fourth proportional to 78,156.98, 117,112.53 and 60,430.94 is: 90,551.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,156.98 : 117,112.53 = 60,430.94 : x
  2. Step 2: Convert to fraction form
    78,156.98/117,112.53 = 60,430.94/x
  3. Step 3: Cross multiply
    78,156.98x = 117,112.53 × 60,430.94
  4. Step 4: Simplify right side
    78,156.98x = 7,077,220,273.68
  5. Step 5: Solve for x
    x = 7,077,220,273.68/78,156.98
  6. Step 6: Final answer
    x = 90,551.35

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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.