Home / 157,521.16-217,256.34-100,937.80

Finding the Fourth Proportional to 157,521.16, 217,256.34 and 100,937.80

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Solution

The fourth proportional to 157,521.16, 217,256.34 and 100,937.80 is: 139,215.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,521.16 : 217,256.34 = 100,937.80 : x
  2. Step 2: Convert to fraction form
    157,521.16/217,256.34 = 100,937.80/x
  3. Step 3: Cross multiply
    157,521.16x = 217,256.34 × 100,937.80
  4. Step 4: Simplify right side
    157,521.16x = 21,929,376,995.65
  5. Step 5: Solve for x
    x = 21,929,376,995.65/157,521.16
  6. Step 6: Final answer
    x = 139,215.44

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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.