Home / 105,445.08-145,516.56-57,698.40

Finding the Fourth Proportional to 105,445.08, 145,516.56 and 57,698.40

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Solution

The fourth proportional to 105,445.08, 145,516.56 and 57,698.40 is: 79,625.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,445.08 : 145,516.56 = 57,698.40 : x
  2. Step 2: Convert to fraction form
    105,445.08/145,516.56 = 57,698.40/x
  3. Step 3: Cross multiply
    105,445.08x = 145,516.56 × 57,698.40
  4. Step 4: Simplify right side
    105,445.08x = 8,396,072,685.50
  5. Step 5: Solve for x
    x = 8,396,072,685.50/105,445.08
  6. Step 6: Final answer
    x = 79,625.08

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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.