Home / 153,100.24-211,252.80-85,115.32

Finding the Fourth Proportional to 153,100.24, 211,252.80 and 85,115.32

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Solution

The fourth proportional to 153,100.24, 211,252.80 and 85,115.32 is: 117,444.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,100.24 : 211,252.80 = 85,115.32 : x
  2. Step 2: Convert to fraction form
    153,100.24/211,252.80 = 85,115.32/x
  3. Step 3: Cross multiply
    153,100.24x = 211,252.80 × 85,115.32
  4. Step 4: Simplify right side
    153,100.24x = 17,980,849,672.90
  5. Step 5: Solve for x
    x = 17,980,849,672.90/153,100.24
  6. Step 6: Final answer
    x = 117,444.95

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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.