Home / 153,117.95-211,298.83-85,131.41

Finding the Fourth Proportional to 153,117.95, 211,298.83 and 85,131.41

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Solution

The fourth proportional to 153,117.95, 211,298.83 and 85,131.41 is: 117,479.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,117.95 : 211,298.83 = 85,131.41 : x
  2. Step 2: Convert to fraction form
    153,117.95/211,298.83 = 85,131.41/x
  3. Step 3: Cross multiply
    153,117.95x = 211,298.83 × 85,131.41
  4. Step 4: Simplify right side
    153,117.95x = 17,988,166,059.93
  5. Step 5: Solve for x
    x = 17,988,166,059.93/153,117.95
  6. Step 6: Final answer
    x = 117,479.15

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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.