Home / 89,743.70-134,615.55-77,277.80

Finding the Fourth Proportional to 89,743.70, 134,615.55 and 77,277.80

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Solution

The fourth proportional to 89,743.70, 134,615.55 and 77,277.80 is: 115,916.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,743.70 : 134,615.55 = 77,277.80 : x
  2. Step 2: Convert to fraction form
    89,743.70/134,615.55 = 77,277.80/x
  3. Step 3: Cross multiply
    89,743.70x = 134,615.55 × 77,277.80
  4. Step 4: Simplify right side
    89,743.70x = 10,402,793,549.79
  5. Step 5: Solve for x
    x = 10,402,793,549.79/89,743.70
  6. Step 6: Final answer
    x = 115,916.70

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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.