Home / 131,561.61-181,541.03-77,848.89

Finding the Fourth Proportional to 131,561.61, 181,541.03 and 77,848.89

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Solution

The fourth proportional to 131,561.61, 181,541.03 and 77,848.89 is: 107,423.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,561.61 : 181,541.03 = 77,848.89 : x
  2. Step 2: Convert to fraction form
    131,561.61/181,541.03 = 77,848.89/x
  3. Step 3: Cross multiply
    131,561.61x = 181,541.03 × 77,848.89
  4. Step 4: Simplify right side
    131,561.61x = 14,132,767,285.71
  5. Step 5: Solve for x
    x = 14,132,767,285.71/131,561.61
  6. Step 6: Final answer
    x = 107,423.19

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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.