Home / 217,275.02-299,838.57-121,781.72

Finding the Fourth Proportional to 217,275.02, 299,838.57 and 121,781.72

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Solution

The fourth proportional to 217,275.02, 299,838.57 and 121,781.72 is: 168,058.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,275.02 : 299,838.57 = 121,781.72 : x
  2. Step 2: Convert to fraction form
    217,275.02/299,838.57 = 121,781.72/x
  3. Step 3: Cross multiply
    217,275.02x = 299,838.57 × 121,781.72
  4. Step 4: Simplify right side
    217,275.02x = 36,514,855,277.75
  5. Step 5: Solve for x
    x = 36,514,855,277.75/217,275.02
  6. Step 6: Final answer
    x = 168,058.23

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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.