Home / 142,044,081.12-196,020,828.90-76,853,985.12

Finding the Fourth Proportional to 142,044,081.12, 196,020,828.90 and 76,853,985.12

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Solution

The fourth proportional to 142,044,081.12, 196,020,828.90 and 76,853,985.12 is: 106,058,497.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,044,081.12 : 196,020,828.90 = 76,853,985.12 : x
  2. Step 2: Convert to fraction form
    142,044,081.12/196,020,828.90 = 76,853,985.12/x
  3. Step 3: Cross multiply
    142,044,081.12x = 196,020,828.90 × 76,853,985.12
  4. Step 4: Simplify right side
    142,044,081.12x = 15,064,981,867,490,668
  5. Step 5: Solve for x
    x = 15,064,981,867,490,668/142,044,081.12
  6. Step 6: Final answer
    x = 106,058,497.82

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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.