Home / 105,678.17-145,838.67-57,933.29

Finding the Fourth Proportional to 105,678.17, 145,838.67 and 57,933.29

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Solution

The fourth proportional to 105,678.17, 145,838.67 and 57,933.29 is: 79,949.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,678.17 : 145,838.67 = 57,933.29 : x
  2. Step 2: Convert to fraction form
    105,678.17/145,838.67 = 57,933.29/x
  3. Step 3: Cross multiply
    105,678.17x = 145,838.67 × 57,933.29
  4. Step 4: Simplify right side
    105,678.17x = 8,448,913,962.32
  5. Step 5: Solve for x
    x = 8,448,913,962.32/105,678.17
  6. Step 6: Final answer
    x = 79,949.47

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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.