Home / 111,153.12-153,389.86-63,407.26

Finding the Fourth Proportional to 111,153.12, 153,389.86 and 63,407.26

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Solution

The fourth proportional to 111,153.12, 153,389.86 and 63,407.26 is: 87,501.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,153.12 : 153,389.86 = 63,407.26 : x
  2. Step 2: Convert to fraction form
    111,153.12/153,389.86 = 63,407.26/x
  3. Step 3: Cross multiply
    111,153.12x = 153,389.86 × 63,407.26
  4. Step 4: Simplify right side
    111,153.12x = 9,726,030,734.38
  5. Step 5: Solve for x
    x = 9,726,030,734.38/111,153.12
  6. Step 6: Final answer
    x = 87,501.19

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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.