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Finding the Fourth Proportional to 156,666.65, 216,088.29 and 143,787.51

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Solution

The fourth proportional to 156,666.65, 216,088.29 and 143,787.51 is: 198,324.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,666.65 : 216,088.29 = 143,787.51 : x
  2. Step 2: Convert to fraction form
    156,666.65/216,088.29 = 143,787.51/x
  3. Step 3: Cross multiply
    156,666.65x = 216,088.29 × 143,787.51
  4. Step 4: Simplify right side
    156,666.65x = 31,070,797,159.26
  5. Step 5: Solve for x
    x = 31,070,797,159.26/156,666.65
  6. Step 6: Final answer
    x = 198,324.26

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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.