Home / 153,601.12-211,970.51-85,622.41

Finding the Fourth Proportional to 153,601.12, 211,970.51 and 85,622.41

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Solution

The fourth proportional to 153,601.12, 211,970.51 and 85,622.41 is: 118,159.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,601.12 : 211,970.51 = 85,622.41 : x
  2. Step 2: Convert to fraction form
    153,601.12/211,970.51 = 85,622.41/x
  3. Step 3: Cross multiply
    153,601.12x = 211,970.51 × 85,622.41
  4. Step 4: Simplify right side
    153,601.12x = 18,149,425,915.13
  5. Step 5: Solve for x
    x = 18,149,425,915.13/153,601.12
  6. Step 6: Final answer
    x = 118,159.46

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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.