Home / 105,176.93-145,144.70-57,430.28

Finding the Fourth Proportional to 105,176.93, 145,144.70 and 57,430.28

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Solution

The fourth proportional to 105,176.93, 145,144.70 and 57,430.28 is: 79,254.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,176.93 : 145,144.70 = 57,430.28 : x
  2. Step 2: Convert to fraction form
    105,176.93/145,144.70 = 57,430.28/x
  3. Step 3: Cross multiply
    105,176.93x = 145,144.70 × 57,430.28
  4. Step 4: Simplify right side
    105,176.93x = 8,335,700,359.50
  5. Step 5: Solve for x
    x = 8,335,700,359.50/105,176.93
  6. Step 6: Final answer
    x = 79,254.08

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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.