Home / 153,913.02-212,389.02-90,238.50

Finding the Fourth Proportional to 153,913.02, 212,389.02 and 90,238.50

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Solution

The fourth proportional to 153,913.02, 212,389.02 and 90,238.50 is: 124,522.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,913.02 : 212,389.02 = 90,238.50 : x
  2. Step 2: Convert to fraction form
    153,913.02/212,389.02 = 90,238.50/x
  3. Step 3: Cross multiply
    153,913.02x = 212,389.02 × 90,238.50
  4. Step 4: Simplify right side
    153,913.02x = 19,165,666,581.27
  5. Step 5: Solve for x
    x = 19,165,666,581.27/153,913.02
  6. Step 6: Final answer
    x = 124,522.71

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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.