Home / 153,743,130.92-211,973,065.96-128,319,048.76

Finding the Fourth Proportional to 153,743,130.92, 211,973,065.96 and 128,319,048.76

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Solution

The fourth proportional to 153,743,130.92, 211,973,065.96 and 128,319,048.76 is: 176,919,658.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,743,130.92 : 211,973,065.96 = 128,319,048.76 : x
  2. Step 2: Convert to fraction form
    153,743,130.92/211,973,065.96 = 128,319,048.76/x
  3. Step 3: Cross multiply
    153,743,130.92x = 211,973,065.96 × 128,319,048.76
  4. Step 4: Simplify right side
    153,743,130.92x = 27,200,182,186,727,940
  5. Step 5: Solve for x
    x = 27,200,182,186,727,940/153,743,130.92
  6. Step 6: Final answer
    x = 176,919,658.29

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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.