Home / 153,913.85-212,384.93-89,370.47

Finding the Fourth Proportional to 153,913.85, 212,384.93 and 89,370.47

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Solution

The fourth proportional to 153,913.85, 212,384.93 and 89,370.47 is: 123,321.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,913.85 : 212,384.93 = 89,370.47 : x
  2. Step 2: Convert to fraction form
    153,913.85/212,384.93 = 89,370.47/x
  3. Step 3: Cross multiply
    153,913.85x = 212,384.93 × 89,370.47
  4. Step 4: Simplify right side
    153,913.85x = 18,980,941,015.02
  5. Step 5: Solve for x
    x = 18,980,941,015.02/153,913.85
  6. Step 6: Final answer
    x = 123,321.85

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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.