Home / 156,781.53-216,275.58-99,319.47

Finding the Fourth Proportional to 156,781.53, 216,275.58 and 99,319.47

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Solution

The fourth proportional to 156,781.53, 216,275.58 and 99,319.47 is: 137,008.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.53 : 216,275.58 = 99,319.47 : x
  2. Step 2: Convert to fraction form
    156,781.53/216,275.58 = 99,319.47/x
  3. Step 3: Cross multiply
    156,781.53x = 216,275.58 × 99,319.47
  4. Step 4: Simplify right side
    156,781.53x = 21,480,375,482.95
  5. Step 5: Solve for x
    x = 21,480,375,482.95/156,781.53
  6. Step 6: Final answer
    x = 137,008.33

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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.