Home / 129,031,637.60-193,547,456.40-77,971,311.20

Finding the Fourth Proportional to 129,031,637.60, 193,547,456.40 and 77,971,311.20

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Solution

The fourth proportional to 129,031,637.60, 193,547,456.40 and 77,971,311.20 is: 116,956,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,031,637.60 : 193,547,456.40 = 77,971,311.20 : x
  2. Step 2: Convert to fraction form
    129,031,637.60/193,547,456.40 = 77,971,311.20/x
  3. Step 3: Cross multiply
    129,031,637.60x = 193,547,456.40 × 77,971,311.20
  4. Step 4: Simplify right side
    129,031,637.60x = 15,091,148,954,932,832
  5. Step 5: Solve for x
    x = 15,091,148,954,932,832/129,031,637.60
  6. Step 6: Final answer
    x = 116,956,966.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.