Home / 99,434.88-137,206.08-56,995.20

Finding the Fourth Proportional to 99,434.88, 137,206.08 and 56,995.20

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Solution

The fourth proportional to 99,434.88, 137,206.08 and 56,995.20 is: 78,645.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,434.88 : 137,206.08 = 56,995.20 : x
  2. Step 2: Convert to fraction form
    99,434.88/137,206.08 = 56,995.20/x
  3. Step 3: Cross multiply
    99,434.88x = 137,206.08 × 56,995.20
  4. Step 4: Simplify right side
    99,434.88x = 7,820,087,970.82
  5. Step 5: Solve for x
    x = 7,820,087,970.82/99,434.88
  6. Step 6: Final answer
    x = 78,645.32

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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.