Home / 157,129.20-216,782.28-93,465.36

Finding the Fourth Proportional to 157,129.20, 216,782.28 and 93,465.36

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Solution

The fourth proportional to 157,129.20, 216,782.28 and 93,465.36 is: 128,948.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,129.20 : 216,782.28 = 93,465.36 : x
  2. Step 2: Convert to fraction form
    157,129.20/216,782.28 = 93,465.36/x
  3. Step 3: Cross multiply
    157,129.20x = 216,782.28 × 93,465.36
  4. Step 4: Simplify right side
    157,129.20x = 20,261,633,841.82
  5. Step 5: Solve for x
    x = 20,261,633,841.82/157,129.20
  6. Step 6: Final answer
    x = 128,948.88

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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.