Home / 153,929.90-212,421.04-85,947.93

Finding the Fourth Proportional to 153,929.90, 212,421.04 and 85,947.93

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Solution

The fourth proportional to 153,929.90, 212,421.04 and 85,947.93 is: 118,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,929.90 : 212,421.04 = 85,947.93 : x
  2. Step 2: Convert to fraction form
    153,929.90/212,421.04 = 85,947.93/x
  3. Step 3: Cross multiply
    153,929.90x = 212,421.04 × 85,947.93
  4. Step 4: Simplify right side
    153,929.90x = 18,257,148,676.45
  5. Step 5: Solve for x
    x = 18,257,148,676.45/153,929.90
  6. Step 6: Final answer
    x = 118,606.90

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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.