Home / 105,077.12-157,615.68-70,085.12

Finding the Fourth Proportional to 105,077.12, 157,615.68 and 70,085.12

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Solution

The fourth proportional to 105,077.12, 157,615.68 and 70,085.12 is: 105,127.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,077.12 : 157,615.68 = 70,085.12 : x
  2. Step 2: Convert to fraction form
    105,077.12/157,615.68 = 70,085.12/x
  3. Step 3: Cross multiply
    105,077.12x = 157,615.68 × 70,085.12
  4. Step 4: Simplify right side
    105,077.12x = 11,046,513,846.68
  5. Step 5: Solve for x
    x = 11,046,513,846.68/105,077.12
  6. Step 6: Final answer
    x = 105,127.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.