Home / 315,051-472,795.38-128,062.68

Finding the Fourth Proportional to 315,051, 472,795.38 and 128,062.68

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Solution

The fourth proportional to 315,051, 472,795.38 and 128,062.68 is: 192,182.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,051 : 472,795.38 = 128,062.68 : x
  2. Step 2: Convert to fraction form
    315,051/472,795.38 = 128,062.68/x
  3. Step 3: Cross multiply
    315,051x = 472,795.38 × 128,062.68
  4. Step 4: Simplify right side
    315,051x = 60,547,443,454.42
  5. Step 5: Solve for x
    x = 60,547,443,454.42/315,051
  6. Step 6: Final answer
    x = 192,182.99

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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.