Home / 153,106.47-211,293.96-85,130.43

Finding the Fourth Proportional to 153,106.47, 211,293.96 and 85,130.43

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Solution

The fourth proportional to 153,106.47, 211,293.96 and 85,130.43 is: 117,483.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,106.47 : 211,293.96 = 85,130.43 : x
  2. Step 2: Convert to fraction form
    153,106.47/211,293.96 = 85,130.43/x
  3. Step 3: Cross multiply
    153,106.47x = 211,293.96 × 85,130.43
  4. Step 4: Simplify right side
    153,106.47x = 17,987,545,671.20
  5. Step 5: Solve for x
    x = 17,987,545,671.20/153,106.47
  6. Step 6: Final answer
    x = 117,483.90

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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.