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Finding the Fourth Proportional to 160,653.45, 221,802.51 and 103,392.21

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Solution

The fourth proportional to 160,653.45, 221,802.51 and 103,392.21 is: 142,746.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,653.45 : 221,802.51 = 103,392.21 : x
  2. Step 2: Convert to fraction form
    160,653.45/221,802.51 = 103,392.21/x
  3. Step 3: Cross multiply
    160,653.45x = 221,802.51 × 103,392.21
  4. Step 4: Simplify right side
    160,653.45x = 22,932,650,472.97
  5. Step 5: Solve for x
    x = 22,932,650,472.97/160,653.45
  6. Step 6: Final answer
    x = 142,746.08

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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.