Home / 151,390,731.76-208,919,301.38-81,776,143.40

Finding the Fourth Proportional to 151,390,731.76, 208,919,301.38 and 81,776,143.40

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Solution

The fourth proportional to 151,390,731.76, 208,919,301.38 and 81,776,143.40 is: 112,851,127.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,390,731.76 : 208,919,301.38 = 81,776,143.40 : x
  2. Step 2: Convert to fraction form
    151,390,731.76/208,919,301.38 = 81,776,143.40/x
  3. Step 3: Cross multiply
    151,390,731.76x = 208,919,301.38 × 81,776,143.40
  4. Step 4: Simplify right side
    151,390,731.76x = 17,084,614,749,167,454
  5. Step 5: Solve for x
    x = 17,084,614,749,167,454/151,390,731.76
  6. Step 6: Final answer
    x = 112,851,127.35

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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.