Home / 145,220,979.29-200,399,104.76-79,140,058.72

Finding the Fourth Proportional to 145,220,979.29, 200,399,104.76 and 79,140,058.72

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Solution

The fourth proportional to 145,220,979.29, 200,399,104.76 and 79,140,058.72 is: 109,210,094.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,220,979.29 : 200,399,104.76 = 79,140,058.72 : x
  2. Step 2: Convert to fraction form
    145,220,979.29/200,399,104.76 = 79,140,058.72/x
  3. Step 3: Cross multiply
    145,220,979.29x = 200,399,104.76 × 79,140,058.72
  4. Step 4: Simplify right side
    145,220,979.29x = 15,859,596,917,245,134
  5. Step 5: Solve for x
    x = 15,859,596,917,245,134/145,220,979.29
  6. Step 6: Final answer
    x = 109,210,094.82

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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.