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Finding the Fourth Proportional to 157,085.52, 216,695.36 and 93,378

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Solution

The fourth proportional to 157,085.52, 216,695.36 and 93,378 is: 128,812.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,085.52 : 216,695.36 = 93,378 : x
  2. Step 2: Convert to fraction form
    157,085.52/216,695.36 = 93,378/x
  3. Step 3: Cross multiply
    157,085.52x = 216,695.36 × 93,378
  4. Step 4: Simplify right side
    157,085.52x = 20,234,579,326.08
  5. Step 5: Solve for x
    x = 20,234,579,326.08/157,085.52
  6. Step 6: Final answer
    x = 128,812.50

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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.