Home / 120,830.52-181,320.63-70,253.35

Finding the Fourth Proportional to 120,830.52, 181,320.63 and 70,253.35

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Solution

The fourth proportional to 120,830.52, 181,320.63 and 70,253.35 is: 105,423.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,830.52 : 181,320.63 = 70,253.35 : x
  2. Step 2: Convert to fraction form
    120,830.52/181,320.63 = 70,253.35/x
  3. Step 3: Cross multiply
    120,830.52x = 181,320.63 × 70,253.35
  4. Step 4: Simplify right side
    120,830.52x = 12,738,381,681.61
  5. Step 5: Solve for x
    x = 12,738,381,681.61/120,830.52
  6. Step 6: Final answer
    x = 105,423.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.