Home / 153,973.17-212,480.89-85,991.36

Finding the Fourth Proportional to 153,973.17, 212,480.89 and 85,991.36

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Solution

The fourth proportional to 153,973.17, 212,480.89 and 85,991.36 is: 118,666.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,973.17 : 212,480.89 = 85,991.36 : x
  2. Step 2: Convert to fraction form
    153,973.17/212,480.89 = 85,991.36/x
  3. Step 3: Cross multiply
    153,973.17x = 212,480.89 × 85,991.36
  4. Step 4: Simplify right side
    153,973.17x = 18,271,519,427.73
  5. Step 5: Solve for x
    x = 18,271,519,427.73/153,973.17
  6. Step 6: Final answer
    x = 118,666.90

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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.