Home / 153,803.20-212,248.93-85,818.94

Finding the Fourth Proportional to 153,803.20, 212,248.93 and 85,818.94

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Solution

The fourth proportional to 153,803.20, 212,248.93 and 85,818.94 is: 118,430.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,803.20 : 212,248.93 = 85,818.94 : x
  2. Step 2: Convert to fraction form
    153,803.20/212,248.93 = 85,818.94/x
  3. Step 3: Cross multiply
    153,803.20x = 212,248.93 × 85,818.94
  4. Step 4: Simplify right side
    153,803.20x = 18,214,977,127.49
  5. Step 5: Solve for x
    x = 18,214,977,127.49/153,803.20
  6. Step 6: Final answer
    x = 118,430.42

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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.