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Finding the Fourth Proportional to 157,090, 216,782.52 and 93,426.40

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Solution

The fourth proportional to 157,090, 216,782.52 and 93,426.40 is: 128,927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,090 : 216,782.52 = 93,426.40 : x
  2. Step 2: Convert to fraction form
    157,090/216,782.52 = 93,426.40/x
  3. Step 3: Cross multiply
    157,090x = 216,782.52 × 93,426.40
  4. Step 4: Simplify right side
    157,090x = 20,253,210,426.53
  5. Step 5: Solve for x
    x = 20,253,210,426.53/157,090
  6. Step 6: Final answer
    x = 128,927.43

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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.