Home / 121,807.37-168,128.13-83,573.15

Finding the Fourth Proportional to 121,807.37, 168,128.13 and 83,573.15

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Solution

The fourth proportional to 121,807.37, 168,128.13 and 83,573.15 is: 115,354.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,807.37 : 168,128.13 = 83,573.15 : x
  2. Step 2: Convert to fraction form
    121,807.37/168,128.13 = 83,573.15/x
  3. Step 3: Cross multiply
    121,807.37x = 168,128.13 × 83,573.15
  4. Step 4: Simplify right side
    121,807.37x = 14,050,996,587.07
  5. Step 5: Solve for x
    x = 14,050,996,587.07/121,807.37
  6. Step 6: Final answer
    x = 115,354.24

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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.