Home / 157,421.04-217,239.64-85,801.06

Finding the Fourth Proportional to 157,421.04, 217,239.64 and 85,801.06

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Solution

The fourth proportional to 157,421.04, 217,239.64 and 85,801.06 is: 118,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,421.04 : 217,239.64 = 85,801.06 : x
  2. Step 2: Convert to fraction form
    157,421.04/217,239.64 = 85,801.06/x
  3. Step 3: Cross multiply
    157,421.04x = 217,239.64 × 85,801.06
  4. Step 4: Simplify right side
    157,421.04x = 18,639,391,386.02
  5. Step 5: Solve for x
    x = 18,639,391,386.02/157,421.04
  6. Step 6: Final answer
    x = 118,404.70

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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.