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Finding the Fourth Proportional to 145,114.65, 217,108.77 and 127,210.61

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Solution

The fourth proportional to 145,114.65, 217,108.77 and 127,210.61 is: 190,322.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,114.65 : 217,108.77 = 127,210.61 : x
  2. Step 2: Convert to fraction form
    145,114.65/217,108.77 = 127,210.61/x
  3. Step 3: Cross multiply
    145,114.65x = 217,108.77 × 127,210.61
  4. Step 4: Simplify right side
    145,114.65x = 27,618,537,982.51
  5. Step 5: Solve for x
    x = 27,618,537,982.51/145,114.65
  6. Step 6: Final answer
    x = 190,322.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.