Home / 212,931.63-319,397.40-55,160.07

Finding the Fourth Proportional to 212,931.63, 319,397.40 and 55,160.07

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Solution

The fourth proportional to 212,931.63, 319,397.40 and 55,160.07 is: 82,740.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,931.63 : 319,397.40 = 55,160.07 : x
  2. Step 2: Convert to fraction form
    212,931.63/319,397.40 = 55,160.07/x
  3. Step 3: Cross multiply
    212,931.63x = 319,397.40 × 55,160.07
  4. Step 4: Simplify right side
    212,931.63x = 17,617,982,941.82
  5. Step 5: Solve for x
    x = 17,617,982,941.82/212,931.63
  6. Step 6: Final answer
    x = 82,740.09

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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.