Home / 105,689.90-145,852.02-57,942.22

Finding the Fourth Proportional to 105,689.90, 145,852.02 and 57,942.22

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Solution

The fourth proportional to 105,689.90, 145,852.02 and 57,942.22 is: 79,960.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,689.90 : 145,852.02 = 57,942.22 : x
  2. Step 2: Convert to fraction form
    105,689.90/145,852.02 = 57,942.22/x
  3. Step 3: Cross multiply
    105,689.90x = 145,852.02 × 57,942.22
  4. Step 4: Simplify right side
    105,689.90x = 8,450,989,830.28
  5. Step 5: Solve for x
    x = 8,450,989,830.28/105,689.90
  6. Step 6: Final answer
    x = 79,960.24

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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.