Home / 98,877.36-136,443.24-56,430.12

Finding the Fourth Proportional to 98,877.36, 136,443.24 and 56,430.12

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Solution

The fourth proportional to 98,877.36, 136,443.24 and 56,430.12 is: 77,869.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,877.36 : 136,443.24 = 56,430.12 : x
  2. Step 2: Convert to fraction form
    98,877.36/136,443.24 = 56,430.12/x
  3. Step 3: Cross multiply
    98,877.36x = 136,443.24 × 56,430.12
  4. Step 4: Simplify right side
    98,877.36x = 7,699,508,406.39
  5. Step 5: Solve for x
    x = 7,699,508,406.39/98,877.36
  6. Step 6: Final answer
    x = 77,869.28

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1.5x scale

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.