Home / 153,881.24-212,452.10-99,461.90

Finding the Fourth Proportional to 153,881.24, 212,452.10 and 99,461.90

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Solution

The fourth proportional to 153,881.24, 212,452.10 and 99,461.90 is: 137,319.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,881.24 : 212,452.10 = 99,461.90 : x
  2. Step 2: Convert to fraction form
    153,881.24/212,452.10 = 99,461.90/x
  3. Step 3: Cross multiply
    153,881.24x = 212,452.10 × 99,461.90
  4. Step 4: Simplify right side
    153,881.24x = 21,130,889,524.99
  5. Step 5: Solve for x
    x = 21,130,889,524.99/153,881.24
  6. Step 6: Final answer
    x = 137,319.46

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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.