Home / 145,224,015.40-217,836,023.10-77,031,605.80

Finding the Fourth Proportional to 145,224,015.40, 217,836,023.10 and 77,031,605.80

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Solution

The fourth proportional to 145,224,015.40, 217,836,023.10 and 77,031,605.80 is: 115,547,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,224,015.40 : 217,836,023.10 = 77,031,605.80 : x
  2. Step 2: Convert to fraction form
    145,224,015.40/217,836,023.10 = 77,031,605.80/x
  3. Step 3: Cross multiply
    145,224,015.40x = 217,836,023.10 × 77,031,605.80
  4. Step 4: Simplify right side
    145,224,015.40x = 16,780,258,660,478,892
  5. Step 5: Solve for x
    x = 16,780,258,660,478,892/145,224,015.40
  6. Step 6: Final answer
    x = 115,547,408.70

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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.