Home / 102,386.16-141,289.20-57,061.80

Finding the Fourth Proportional to 102,386.16, 141,289.20 and 57,061.80

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Solution

The fourth proportional to 102,386.16, 141,289.20 and 57,061.80 is: 78,743.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,386.16 : 141,289.20 = 57,061.80 : x
  2. Step 2: Convert to fraction form
    102,386.16/141,289.20 = 57,061.80/x
  3. Step 3: Cross multiply
    102,386.16x = 141,289.20 × 57,061.80
  4. Step 4: Simplify right side
    102,386.16x = 8,062,216,072.56
  5. Step 5: Solve for x
    x = 8,062,216,072.56/102,386.16
  6. Step 6: Final answer
    x = 78,743.22

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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.